The 32GB AT&T white iPhone 5 that I preordered from Apple is arriving tomorrow. Yesterday when trying to update all of the Apple apps on my current 32GB 4S I ran out of storage and realized that maybe I should have preordered the 64GB model. Does anyone know if it would be possible for me to take the unopened 32GB preordered phone to my Apple store tomorrow, exchange it for a 64GB model and pay the difference? Do you think the store will want me to wait online with everyone else?