My Apple store is located inside of this huge indoor shopping mall. I stopped by just to check out the scene. About 30 people waiting outside the store and there were 2 security guards and 2 employees at the door. And, 2 other employees with printouts seemed to check people getting in the line if their names are on the list. I didn't even bother to ask, but it looked like no walk-ins, but I could be wrong about that. I still have 2 weeks left before my Verizon contract expires. So, I will try another day. I don't think 3GS will sell out.