Of course, you've got your basics: No Eating. No Drinking. No Smoking. No Flash Photography. Please steer clear of the doors. Please stay seated until the vehicle comes to a full and complete stop.
Then, the closer you get to downtown Orlando, the more strict the rules become. No hookers. No Drugs. By the time you get to Lake Eola, you're not even allowed to "recline on park benches or otherwise be in a horizontal position." You're not allowed to sleep in the bushes or remain in the foliage. No sitting in the park after dark. No coolers. No parking during the day. No parking at night. No alcohol. No high heels on the playground. No vending.
And of course - No skating. No skateboarding. No rollerblading, and definitely no biking on the bike trail...or in the bushes.