It's been a few years since we did HDDR, but if memory serves me, I think we had to give a credit card to hold our reservation, but when we actually got our tickets, we could either go ahead and have them charged to the card or pay for them with cash, travelers checks, etc. if we chose. You actually get a reservation for HDDR, not a PS. You need a credit card to reserve it because if you're a no-show, you still get charged. The year that we did HDDR, we were staying at ASMo, and we were able to pick up and pay for the tickets at guest services at the resort.