Just to clarify the equity piece of everyone's conversation. My wife has been in entertainment at Disney for almost 10 years. She has been in equity shows, been an equity performer and just a good ol regular performer in parades and shows. If you have a speaking or singing part, you are 100% equity (they are unioned and this will NEVER change). Once you are given your equity card you will retain that card as long as you are in the show. Some performers come to Disney just to get their equity card so they can audition for equity only shows on broadway. Some pure performers with no speaking/singing are equity (castle show, Beauty and the Beast, ALL performers in Nemo on Stage). Entertainment folks in parades, shows, fur (any costumed non-face character) are non equity. And yes, equity performers are paid MUCH better than normal performers at Disney.
I hope this clarifies everything just a bit.