You will pick up from the hotel a voucher for each person in your party, and then when you get to SW you have to redeem the vouchers (I used the automated kiosks to the left of the ticket booths). The kiosks spit out a "ticket" that has each of the headliners listed on it, when you show up at the QQ line for the specific ride the cast member will mark off that you have used your QQ voucher for that ride. Ours were not unlimited QQ, just one time per ride, however on some of the rides the cast member did not mark off our card, so in theory we could use the voucher again. YMMV.
I also discovered after picking up my QQ tickets that they actually expire at the end of the year. While you can only redeem the hotel voucher for that specific day, it looks like the QQ's are good thru 12/31/14.