There's lots of rules. It's why people get so frustrated working there — you're always worried about getting in trouble.
Social media is a big problem there, we weren't allowed to post or talk about the things we did as a character, or even to tell people what character we were. If I was still employed with them an AMA would be a no-no.
When we were performing in the park there were lots of rules about how we were to carry ourselves, not sitting, always smiling, always doing the voice, etc. We also weren't supposed to refer to things outside the Disney realm. Snow White does not know Thomas the Tank Engine.