I agree with you Target's return policies are a bit unfriendly. Everyone knows that you get a whole bunch of stuff at baby showers that are duplicates, the wrong size, etc. It's not ungrateful to have to exhange or return an item. Some gifts come with receipts and some without.
I had a poor customer experience with Target as well, and I was willing to exchange for goods if given the opportunity. I did not have a baby shower registry at Target nor did I register for a stroller. However, someone with good intentions, gave me a stroller from Target. I had previously purchased a stroller on my own and did not need one. The box was unopened, with clear labeling that the product was from Target. One month after I had the baby I brought the thing to Target who stated that they could not take it back at that particular store because it wasn't in stock there and proceded to give me locations where it was. That is absolutely ridiculous and unfriendly. Who would have ever guessed? I always liked Target!

BTW the locations they gave me were both at least an hour away.

It was ridiculous, especially when I spend so much cash in that store. Now I think twice before I buy gifts for others there. I wouldn't want to put them through the same stress, if I got something for them they needed to return.