Having never gone, but ever reading things about what happens in the WWDC as I've been interested in programming, but never done anything, from most of the participants it sounds like an absolutely stunning experience as you have workshops like crazy to help you make the most of the developing experience. That and I believe there are massive multiplayer games that go 24/7 or something like that... If I could I would love to go, just to get some experience and learn whats going to be happening from "the horse's mouth".