Enter your resort reservation number on the page when you book the Hoop de Doo. The system has to know that you are on the dining plan. It's possible that if you tie in your room reservation, the system will understand that the dining plan is part of your reservation and not ask you to pay in full. If that doesn't work, then you will need to call the dining line and speak to a human in order to get the credit card hold and not full payment.