The official policy: 1 customer, 1 iPhone. If a customer wants one for him and another member of his family, then another member of his family must be present.Does this also apply for AT&T stores?
Apple stores will also vary in number of devices to be delivered.I think the ATT stores are going to be a crapshoot. Each store varies in size and quantity of phones they will have. I'm sure they'll have something in place but we just won't know till we get there.