We are just back and while at Disney we lost two of our tickets. I don't know how, especially because we are so careful but it did happen and we had no idea what to do. If we had bought the tickets at the hotel or in Disney and had the receipt they could've tracked them down and issued us new ones. But I bought from connections and their receipt has no helpful information. Anyway thank goodness we still had two tickets and found a wonderful person at our hotel conceirgewho really helped us out. She was on the phone forever with Disney Guest realtions and they finally tracked down our missing tickets based on the two I still had. So it cost us nothing. We thought we'd have to buy two new tickets. But anyway this took hours to do. My tip is to write down the series of numbers found on the back of your tickets. Disney can use these numbers to track them and if you loose them they can issue new ones. Because I ordered from a non-disney site this would have been impossible if we hadn't still had two of our tickets. From now on we will jot these numbers down and keep them in the hotel safe just in case!