Online pre-orders never allow for in-store pick-up. The pick-up option is based off of store stock, and since any store you want to get it from has no copies yet, there is nothing for the system to go off of.
When you order something for pick-up, the order goes into the system, where it goes to the store. Someone there checks the stock, then goes and grabs the item and sets it aside. Then you get an email stating it is ready for pick-up within three hours of you placing the order. If when the associate at the store goes to grab the item and they discover that the item is no longer in stock, then you will get an email stating that, and your order will be cancelled. You then have the option of putting in another pick-up order at another store. Remember, you are not actually charged when you place the order for pick-up. The only time you are charged is when you go into the store and get your item.
Store stock being what it is, it is physically impossible for it to be accurate up to the minute, which is why there is the delay in when your order is placed and when it is actually ready for pick-up. It's also why there is never a guarantee that when you place an order for pick-up, that you will actually get the item.
JB
