Well, I know that if this idea were to be attempted at Clark College, the club charter would have to be worded in a way that would be beneficial to anyone who joins as well as the college. Since it'd be a cafe-style club, mentioning that it's in preparation for learning and developing management skills, or something. Also, (if it were to be at Clark), it would need to make an agreement with the anime club to allow the cafe "workers" to cosplay, since cosplay falls under the jurisdiction of anime.
I'm not sure how it works at other colleges &/or universities, but that's how it'd work at Clark College. I'd also offer myself as the advisor, but I'm planning on being a student again this Summer (Fall at the latest), plus I'm currently advising for the maximum number of clubs that one can advise.
This is a good idea, though.