Looking to get the 5 for both me and my wife, but we will be moving from AT&T to Verizon. We are both on the same account and will want to keep it that way. How does this work with pre-ordering? Do I need to pre-order in store? Or can I order through the apple site and just say it'll be on VZW, and then go into a store and transfer our phone numbers? Also have the issue that we'll be leaving the country on 9/26, and which is the Wed after release date (9/21, Friday). So if we didn't get them before that, we wouldn't be back for 10 more days. Ugh. Thanks!