Most of these interns are going to be self-selected to love Disney. The Disney fans I know are joyful and don't have a lick of cynicism. The "magic of Disney" captures a joyful attitude that was already latent within their personality, but is hard to find elsewhere.

The experience of getting to live and work in a park that non-cynically calls itself the "happiest place on earth", surrounded by peers that are just as joyous as you are, is worth more to them than the pay.

I don't think this is a bad outcome for these interns. For the ones that love it, all the better, and for the ones that end up hating it, they learn when and why to be more skeptical of a culture they don't quite fit into.