Can i exchange at a diff store or does it have to be the store I bought at?

Yes with receipt

Usually yes

Wal-Mart policy allows you to return items at ANY location. Cash refunds are given with a receipt, otherwise it's Store Credit. Debit/Credit are refunded back to the card.

Any store with receipt

Yes indeed.

Depends on if you have a receipt, what the item is, and if the store carries that item as well. But ultimately it's up to the manager's discretion

You can return at another store for store credit.

You can but you need receipt