Returning diapers

I received a box of diapers from Walmart as a gift for my daughter. I’ve never used Walmart brand diapers but have heard some really good reviews but also some not so good. Ive heard of some stores allowing you to return opened diapers if they gave baby a rash or you didn’t like them and only one/few were missing so I’m wondering if Walmart is that way.

Also; to swap sizes for a box of pampers, would i be able to go to any store that sells pampers?? I’m not sure what store they were purchased from; again they were a gift from my baby shower.