No iPhone iPod Without Activation
On the small print of Apple's service plan page it explicitly reads that a 2-year contract is required to make use of any iPhone features, including iPod.
Minimum new 2-year wireless service plan and activation fee required to activate iPhone features, including iPod; plans are subject to AT&T credit approval.
Apple Stores Closing 2-6 on Friday

In preparation for the iPhone release on Friday, Apple Retail Stores in America will close at 2PM until 6.00PM.
Apple retail stores will be closed on June 29 from 2:00 p.m. to 6:00 p.m. to get ready for the premiere of iPhone. We’ll open the doors again at 6:00 p.m., when you can be one of the first to see, try, and buy the iPhone. Be sure to arrive early — iPhone is available on a first-come, first-served basis.