Some people do get their stuff back, but it seems most people don't. Husband and I just submitted photocopies of all the cards and other stuff we wanted to keep (concert tickets, etc.), and had no problems. I know many others who have done the same... copies are fine
Quick follow up questions, please could you tell me: Did you photocopy the front of the cards or just the insides? And if you copied the front did you do so in color or black and white?