I had my shower this weekend and received a bunch of duplicate items. I went to target and the returns clerk had me print off my gift log off the computers. She said that as long as you are registered and they sell the items in the store you do not need a receipt and it doesn't count against the 70 dollar per year limit they have. So make sure you print off that list before making returns ladies!
Re: PSA Target (good review for once)
This exactly when I went to do my returns of duplicates! I was pleasantly surprised!