I think it would be somewhat difficult to photocopy a ticket anyway. They are a specific size and thickness and the machines could easily reject them. I think the danger doesn't lie so much in Dad running to DCA to get FP for his whole family while Mom keeps them at DL to get FP for the family there. That is only a minor plus and saves very little time overall as Dad could just have grabbed the DL FP on his way to DCA. The bigger issue would lie with multiple families or groups using copied tickets together. For example Family A wants to spend the day at DL and Family B wants to spend the day at DCA. If they gave eachother copies of their tickets it would allow each family to get double FP at the park they are in. That would definitely be gaming the system. I do not know how smart the machines are, and I hope they are able to tell photocopied tickets, but if they're not then this is another way that the rumored App FP could be better. Though I suppose you could potentially give someone your login and share FP availability between parks too, unless the new system only allows you to have a FP at one park or the other.