Amazon (AWS) question.

It appears that on Amazon, I can give someone a gift without knowing the person's shipping address, so long as the gift item is in the person's wish list. My questions are:

1) Is there a way to do this if the item is not in the person's wish list? It just seems strange that if I don't know someone's address but wish to give them a gift, the gift item would have to be in that person's wish list .

2) If 1 above is not possible then the next best thing would be to allow the giver to first add the gift item to the recipient's wish list and then give the gift. Is it possible to add items to other people's wish lists? If so can this also be enabled through AWS?