Can I return my iPhone 11 at any Apple Store?

I was on vacation in Orlando Florida and dropped my iphone in a swimming pool. I had another iphone at home but needed one then so I went to the apple store in Orlando and purchased a new iphone they said i have 14 days to return the phone. Can I return the Iphone to any apple store or does it have to be at that location? or can i return by mail.

[Re-Titled by Moderator]