The drinks vary by hotel. I can only speak for the All-Star hotels and POP, but the selections were just about the same.
I'm probably forgetting some, but the choices I can think of are coke, sprite, diet coke, minute maid orange soda, root beer, blue powerade, Lipton sweetened iced tea, fresh brewed unsweetened iced tea, coffee (DISGUSTING Nescafe...bring your coffee from home if you want real coffee), selection of hot teas, and hot chocolate. The POP Century hotel also has slushies in Blue Raspberry or Coke flavors.