I am going to do more testing on this eventually, but from my experience so far, if you have all these things you should get 5 Stars:

7 Unique Roller Coasters

7 Unique Gentle Rides

7 Unique Intense Rides

3 of each type of stall (except restrooms, 6 of these)

Obviously all rides need to be open, all paths need to connect, bins should be placed to stop guests from leaving trash, and adequate seating.

Things that don't affect the park rating:

Lighting, color of things, path types, props, primitives, water, nature, non-ride structures (walls etc).

It is possible that Park value affects the park rating but I don't know how.

And it is obviously possible to achieve 5 stars without all these things, just if you have them there is almost no way you won't have 5 stars

I know the title sounds kind of intense and offensive, but there are some things I do not want to see in people's parks. These things annoy me a LOT and make no sense to me.

1. No queues

Neither me or the guests like it when you have too short a queue. What that means is, the entrance connects to a REGULAR path, not a queue path. When your ride is running, no guests can wait in the line. This can impact your ratings and money making, as well as making your rides look bad. A lot of new players make this mistake, and it is fine then. But if your park is getting larger, you need to fix this.

2. Wrong rollercoaster

This one is not as common as the no queues, but still happens a lot. Sometimes people make rollercoasters, but don't use the features unique to that rollercoaster. For example, making a Vertical Launch Coaster that doesn't use the vertical boosters. If you aren't going to use the vertical boosters, just make a Multi Launch Coaster! If you aren't going to use boosters AT ALL, use a Steel Coaster! If you won't make it slope down very far, use a Junior Coaster! If you are going to make the train 1 train long, use a Wild Mouse Coaster! If you are making a Dive Coaster without using the hold brake, use a Wing Coaster!!!! There are certainly some times where you would want to use a certain coaster even if you aren't using a unique feature, but please try to use the right rollercoaster for the job!

3. Vintage cars to sky limit

So many players do this it is stupid. They build a vintage cars ride that just goes up and up and up, then comes all the way down and ends the ride. WHY!?!?? It won't get any extra speed! Vintage cars rides are for making small tracks that you ride around on, ideally with some scenery! Please stop making Vintage cars like you would make a rollercoaster! (On second thought, don't make rollercoasters like that either, that is super boring.)

If you have any other things that annoy you in the game, comment. We need to educate people.

Spin to Explode?!

Create a Spinning Coaster that Does not end at a Station. with a Spinning Speed at 225 mph too.

Reward: Grand Spinning Coaster, Grand Swing Ride.

De-Decakill!

Kill 20 Visitors at Once,

Completion Suggestion: Place Down a Custom-Track Ride That does not end at a Station, Close everything else in your park. your Ride should have (Unconfirmed) Stations.

Reward: Grand Tombstone.

Great-Water Park!

Fill your Park with Water. and have Every Expansion Plot Unlocked.

Reward: Bridge

Super Money!

Claim 1,000,000 Dollars in Theme park tycoon 2, Either Gaining it yourself or Purchasing it from the Store.

Reward: Money Tree (Bigger), Money Tree (Smaller)

Pro Builder!

This is the Hardest achievement Before you Go onto The Great Times, Own All Achievements.

Reward: Giant Personal Statue, Giant Personal Mannequin, Personal Coaster

Demo World!

Create 5 Parks. All With the Tutorial Finished.

Reward: Demo Coaster

No More!

Delete your Entire Park.

Reward: Unfinished Coaster

Sandland!

Paint a Piece of Terrain Sand.

Reward: Sand Ride

Evil Mega Duck Invasion!

Create a 6x6 Pond. also, own $50,000 in Game. Then start Placing Evil Mega Ducks Everywhere. this works with a friend. This Achievement is harder to get than the Usual "Mega Duck Invasion!" as You need That Achievement Too to get This One.

Reward: Super Evil Duck, Super Evil Mega Duck

Epic Pro Builder!

Place Everything in Theme Park Tycoon 2 in your Park, Own All Achievements, and have Every Expansion Plot Unlocked. This Needs Every Gamepass Too, Even Harder than Pro Builder!Reward: Horizontal Launch Coaster, Invisible Coaster, Random Personal

Statue, Random Personal Mannequin

Super Epic Pro Builder!

Own Epic Pro Builder and Pro Builder, Own Every Achievement, Place Down at Least 240 Toilets, You are in the lead to become The Most Greatest Person In The Game.

Reward: Dakar Water Ride, Space Mountain Ride, Upgraded Swing Ride

Explore the World with Water Boats!

Make a Dakar Water Ride that Goes Around your Entire Park, You can Own Any Expansion Plot.

Reward: Super Water Alterator

Theme parks are an amazing way to relieve your day. Screaming while riding down a sharp drop down a roller coaster (don't throw up!), smiling on a carousel horse, getting wet down a log flume, and finally relaxing with candy and soda. There's no way to frown over there, unless you're sick or... (drumroll) the park is boring.

If your park would bore a child, then it would bore the players. Who would want to go to a park where there are only bare-bones rides, no food to eat, and a flat small roller coaster?

Exactly. With this guide, I will teach you how to create, design, and build a virtual theme park that human-brain-controlled players can compare to theme parks in the real world. You can wow everyone on the block, show off your cool park designs, collect a massive of likes, and even appear on Den_S Twitter page. It isn't easy though (Rome wasn't built in a day, neither was Theme Park Tycoon either), but hopefully, this guide will flatten the sharp edges of the learning curve.

IMPORTANT NOTE: This DOES NOT apply to computer-controlled guests. Guests' artificial intelligence are programmed to be happy by only meeting their basic needs (hunger, thirst, etc.), so that the players won't have to deal with frustration and obtain a degree in architecture or something. A dull-looking theme park can have a 5-star rating. (However though, creating an awesome park can easily win you 5 stars from guests, so this guide may help those who are struggling with the rating.)

1. Be creative. Turn on your imagination!

Would players be thrilled by a park that they've seen a billion times, even though it looks like a real-world park? Nope. Thus, you need to connect to your imagination, an awesome ability that every human is born with, and come up with creative, original, exciting, and innovative ideas for your park. An island populated with maneating dinosaurs (definitely not a Jurassic Park/World reference), a bustling busy city (possibly with zombies), a historical setting teaching a fun history lesson, a county fair complete with a petting zoo, a Las-Vegas-styled casino, outer space with astronauts and aliens to meet, you choose! The possibilites are endless. Don't create something like "Funworld" or "My Own Theme Park".

This doesn't mean you have to be 100% creative. Create a park themed after what you love, like pets or a video game. My old Sonic the Hedgehog theme park earned 10 likes. Take inspiration from real-world theme parks, or even recreate a real-world theme park (examples include Walt Disney World, SeaWorld, Six Flags, Knot's Berry Farm, Silver Dollar City, or local theme parks around your town). Trust me, people will still be impressed if you manage to replicate a real-world park exactly to the details.

TO BE CONTINUED

NPC guests can actually be rude to both your park and the environment, by carelessly throwing trash onto the ground.

Here's what they look like:

EWWWWWWWWWW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Who wants that?

Fortunately, there's a way to combat the litter problem. To clean up the trash, just click that gray dirty pile and spin yourself on the floor (literally). This can be time-consuming, however, as you can only clean up one trash at a time. (Call your best friend if you need to and provide them building rights.) Another way is to destroy the path with trash on it and rebuild it. A good tip is to close the park before you prepare to clean the floor, so you don't have to be annoyed by the incoming piles of litter.

Why deal with the litter problem? The sight of the trash can even scare away NPC guests (yes, they can hate litter!), reducing their happiness and probably the park rating. Getting rid of trash can improve the rating.

To prevent this icky situation, place a trash can about 3 to 4 paths away from each food stall (or spam the cans nearly everywhere, 3-4 paths apart, to ensure squeaky cleanliness). When a guest sees a trash can, they will zoom right up and dump the litter in, instead of dropping it to the ground. When both cleaning up and placing trash cans, use trash as a guideline for where to put the trashcans.

Hopes this saves your stomach (and the guests')!

Okie dokie kiddos, it's time to learn how to make good queues on Theme Park Tycoon 2.

So, let's take a look at a bad queue first.

Ugh. Now, where did this queue go wrong?

First, it surrounds the ride. While this doesn't matter for the observation tower that is shown, it matters a lot for roller coasters.

Second, it's kind of a big mess. It's hard to tell where it starts and ends.

Third, it's a very awkward shape. It's normally better to do your queues in a square area. The shape may leave some room for decoration, but if you don't have a space that it will fit perfectly into, it'll look quite weird in your park.

Finally, it doesn't look like a queue. Anyone who's been to a theme park will tell you that queues have some sort of wall or fence on either side.

Now, let's work on improving it. I'm going to limit myself to the 7x7 box that the queue is currently in, as well as keep the ride as the observation tower.

First improvement. We're going to be able to kill three birds with one stone in this improvement. We're going to solve problems 1 through 3.

Ok. This one's a little bit better.

First up. We (kinda) solved problem number 1, the ride isn't really surrounded (but it's a good queue for this ride).

Second. We have an easy to find entrance in the bottom left, and a distinct exit in the bottom right.

Third, it's in a square area. While it does have one spot left empty, the general shape is still a shape.

BUT!

It still doesn't look like a queue. Let's fix that.

That's better. The queue paths are so much clearer, just with simple rope fences. 

So we've solved issue 4. It would appear that this is an amazing queue. Right?

No. We have another problem. It's so.... well, bland.

Let's add some decoration in that little space.

But first. Let's choose a theme for this ride. I think a Wild West theme would be nice.

So we're going to add Wild West themed decoration in our small 1x2 space. I'm also going to slightly move the queue so we have more room to decorate.

That's nice. We've added some randomly placed decorations and changed the ground to sand. This gives us that nice Wild West vibe. Also, cobblestone path is one of the best for Wild West themes, so we're all good there!

Good? Yeah. Good enough? NO.

Let's change out the rope fence for something more Wild West-ey.

So much better.

Now. Let's talk about indoor and outdoor queues. 

Outdoor queues are queues that are outside. Indoor queues are inside. Shocking.

Now. There is one more thing we need to add to this queue. Lighting. Good queues have lighting. 

So, let's add some lights!

Much, MUCH better.

Well, I think we've made a pretty good queue.

So. What did we learn?

1. Good Queue Shapes

2. USE FENCES

3. Decoration. (w/ themes)

4. USE FENCES (w/ a theme)

5. Lighting.

So. I guess we're done. Using these tips can help you to make much better queues.

If you liked this post, have any other tips on queues, or have any questions, please leave a comment! This took me about an hour or two of work, so kudos are greatly appreciated.

Thanks!

~ThatSirTaco