I think I set up express checkout on the apple.com website. I don't know whether it will be functional when it comes to buying the iPhone tomorrow morning, but I guess I'll find out. When I go to a product on the app (like an iPod), I do get the "buy now" button rather than the "add to cart" button. Do you have the latest version of the app? You probably do because it forces you to get it if yours is outdated. Maybe try re-setting up express check out on the website. I know that when I set it up, I think I changed my credit card. Then the next time I downloaded a song or maybe an app, it had me verify the 3-digit security code on my card. That may have somehow activated the express check out. I definitely get the "buy now" option, though. Good luck. I'm really hoping things go smoothly at 3AM. I plan to have my macbook, my phone, and two iPads ready to go in case one gets hung up. From experience, the app is usually the most effective method. That will be my first choice from my phone.