Could you give us details about the store itself so we can use that as ammo to get Best Buy to release their copies?
No real details other than one of their regular brick and mortar stores in my area. Not all locations seel the higher end cameras and if they do it is usually the kit. When I called to check on my pre-order and received no details, I asked if any stores had any in stock as that function is not available on the website for a pre-order. There was one that had two bodies in stock. I asked if I could change my shipping pre-order to a store pick up order and the CS rep said yes. I then received the confirmation email soon after that it is available for pick up (I will swing by after work). I have a feeling this may be an exception for pre-orders but there may be an embargo for off the street sales until 3/25. BB usually lists stuff like this in their weekly fliers with Sunday availability dates.
You may try and call a store if you do not have a pre-order to see if any are available. You may get someone who has no clue about sales embargos and such and will let you purchase it. Good luck!