Congrats! And hey, that's the role I got too! (I'm Fall Advantage 2012) :3
I've only good things about Custodial, so I'm excited about it. I've done the program once before and knew a few Custodial Cast Members (one lived in the same apartment I did), and they seemed to like their roles.
I've looked it up quite a bit as well, and most people say that the role's easy, fun, and has lots of freedom. It's been called the "diamond in the rough" role. Personally I think it sounds pretty fun! :3