Let us say I have 2 walmart gift cards , each for 10$. Now if I go to walmart and buy a 20 $ item (before tax), then I can give the 2 gift cards one after another and that will cover the cost.
Now when buying online, is the same true? Usually on the checkout page, I just see one text box for discount-code(which i assume is the gift card code). So does it mean that I can only use one card?