i was able to book 1 with no problems at all. Now when i try to book a second reservation for my wife it says "Could not create your reservation at this time, please try again later."
Also, the confirmation email reserved price is wrong, says its $599?! http://dl.dropbox.com/u/424034/Capture3.PNG
Here's what Apple says about buying multiple phones:
How do I buy multiple iPhones?
Pick up your first iPhone at an Apple Retail Store and an Apple Retail associate can help you purchase additional iPhones.