Hospitality is probably the most difficult role to score on the college program. Prior guest service experience and a pretty good phone interview are necessities for this role- since you already work a hotel front desk, that certainly helps. Because of the significant investment Disney makes in training these cast members, it would be advantageous to sign-up for an advantage program.
As far as the role goes, it can vary from resort to resort. At most resorts, this involves at least three sub-roles, Cashier (Front Desk H/H), Lobby Concierge and Runner. The former is pretty much just like any other hotel cashier in the formal sense- they check you in to your "Disney Vacation" and get you established at the resort. However, the level of detail and explanation required is often a much higher expectation from anywhere else you'd work. You're not just checking people in to a hotel, you're setting up their vacation!
Lobby concierge, as you can probably deduce, assists guests in a resort lobby, typically adjacent to the front desk to organize dining reservations, excursions and other activities, and sell tickets. This sub-role is a lot like a glorified vacation planner at one of the parks. The runners do exactly that- run items per guest requests. Other resorts have additional sub-roles that you may or may not be selected to perform. This includes Club Concierge (Disney desk experience is required for this, and is located at deluxe resorts only), Lounge Attendant and Bell services.
Somethings to keep in mind is that resorts operate 24/7/365. There is a great potential for you to be given "funky" shifts, because they must always be staffed. These roles can be a lot of fun, but are a lot of stress as well.
Hopefully that answers some questions!
