The ballroom is set up with the buffet and tables off to one side and dance floor on the other, with the silent auction items along one side. The dance floor opens up at 9, but the buffet will stay open until 10 for latecomers. People will get a wristband that grants admission to all the clubs in the casino and a $25 game chip if they want to try their luck at one of the gaming tables.
The bargain with the Fae kicks in just before midnight and the little folk will run wild, messing with everything electrical in the casino. Let your imaginations run wild!