I plan on preordering 2 iphone 4s through apple.com for shipping to my house. I'm assuming I'll have to use 2 different cards and maybe even different shipping addresses. Fine by me. Here's the deal though. I work at barnes and noble, and we get a service discount through att.com or in-store. I have a promo code for that. If I activate at home through itunes, will I be able to apply this service discount? Or do I need to order from at&t? Or can I order and activate and then contact att about the discount? Also, does anyone know how they're checking for this "one per household" limit? I need to know if I'm using a different card, shipping address or billing address... Thanks for any and all help.