IPhone :: PreOrder From ATT Out Of Town?

I am going to be out of town when the new iPhone comes out. So I was thinking of pre ordering but having it sent to an ATT store that is in the town I will be at. The first part of my question is, has anyone ever done that that can tell me if it's allowed or causes any problem? The reason I ask is that in reading on the ATT web site, is clearing states that you can pre order online and have it shipped to your *Local* ATT store. But I don't want it shipped to my local store. I want it shipped to an ATT store that is 200 miles from my home town. So I don't know if that will be "IFFY!"

The second part of my question is if I can indeed do that, it also says on the ATT web site that you can pick it up anytime after June 25th which is the day after release. I am OK with that. But it also says, First come first served so the fact that I would be preordering and picking up the next day what does that mean for me? Does pre ordering guarantee that they will hold it for me no matter what time I come in? It's my understanding that you don't actually pay for it until you pick it up so could my phone be sold to someone else?