WARNING to everyone about WalMart ship-to-store policy. If you "check in" using their app then they mark the item as "picked up" even if you don't take it and don't sign for it. Using "check in" is useful though, because they go into the back room and actually bring your item to the front before you get there, so pickup is quite a bit faster than usual. And if they have a separate "orange" pickup line, it becomes super-fast to pick things up - sometimes under a minute!