I just recently got back into RCT3. I was creating a mini golf course, and I went in to pick a theme for the entrance queue. This was fine until I went to put the exit, and realized I wouldn't have enough space. I deleted the entrance one that I had and redid my mini golf course so that I would have room. I connected the path back to hole #1 and now there aren't any stations for queues showing up. I've completed the course so I'm not sure why they don't automatically appear to add to my ride. It won't let me test it or anything until I add those. I'm not sure what to do. If I go in to change the theme of the entrance, it says I need to add a station. Any help would be appreciated!

Look at the color of the rails. The rails for the station sections should be a different color than the path sections. If they are all the same color you need to change the pieces from path to station. Highlight the path section and click on the station icon twice while in build mode to change it from a path to a station.

Thank you so much! I finally figured it out.

Don't use the in-game one just because it's functional. Make a custom one with terrain textures, hills and plants.