I'm not sure if they're actually opening, or are they just letting scheduled customers in? My local store called me to make an appointment, and set it for 9:30, and I said, "Oh, you're letting people in before you open at 10?!" and he said yes.
Either way, I think it's smart, considering the onslaught they will be having. I am purchasing mine outright, so I will be in and out, but if you need to be set up, I would bet 30 minutes...
Matt
MyMobileVille
Chersterfield, VA is opening up the mobile department at 8.