If your friends don't have iPhone 4s, you'll have no one to FaceTime with! Good thing Apple is letting you test FaceTime calls with Apple employees at 1-888-FACETIME. I got to talk to Dave. It was kind of awkward.
They're taking calls from 8AM-8PM CDT, so no late night freakshows. The employee gives you a brief tour on Facetime features and the whole process doesn't take more than 3 minutes. It's like Apple's own version of Chat Roulette. [iSmashPhone]