As long as I've played this game I've been a fan of making it as packed as possible. This is without cheats, done in Steam-based play not on OpenRCT. Got OpenRCT so that I could take pics. Not even finished yet. Some coasters have worn out their luster but park still makes $$$. Will be making this as packed as possible
At some point I am going to do this in a giant sandbox and make it even crazier.
It evolves over time into clutter and it becomes hard to edit. But so far no guests manage to get lost amazingly.