Here's something that's less of a tip, but more of a request.
Please don't try to get us to "break character." Even those of us who aren't characters are involved with a storyline, especially the attractions CMs. I work on the safari and I always have people trying to get me to tell them "the real deal"
Yes, the safari is actually 2 weeks long (but its so fun you'll feel like it was only about 20 minutes)
Yes, those baobab trees and ostrich eggs are real (even though the backstage tour told you differently)
Those chains on the ground are only to get mud off our tires (but you'll notice that animals don't cross them into other areas)
There is only one Mickey Mouse and no amount of you winking or making sure there are only adults around will change that. He doesn't wear a costume, there is no one inside of him and the Cinderella you just saw was the same one you saw yesterday.
We love our jobs and we preserve the magic for everyone, not just those young enough not to know better. Of course, this doesn't mean that you'll never hear a backstage tip from a CM, but just because you tell me you've been to Disney 50 times and understand and there are no children around does not necessarily mean I'm going to break character to "let you in on it." If you want the real deal, take a backstage tour, buy a book or surf the net. It's all out there.