I'd love to purchase DVC (trying to talk husband into it). Quick question: We've made 4 trips to WDW over the past 5 years. 3 stays of 9 days at WL; 1 9 day stay at POFQ. Someone told me if we choose to buy into DVC, we can somehow apply the cost of those past trips towards the buy-in since they were all booked through WDW? Too good to be true?