I want to know if I can return Costco items that were given to me as gifts, I do not have receipts. Thanks!

U can call them before u go and ask.

You can get a card to use at Costco

When you return it, the credit goes back to the person who bought it

I belive you can but they only give you a store Cash Card for store credit only,

You will need to have costco membership

Yes , but will likely be given store credit instead of a cash refund