I appreciate the advice from everyone. Unofrtunately I'm probably not going to be able to take the advice.

My problem is that first off, I'm flying in the back of the plane, because I'm using the Fly-2-Get-1 coupon for my friend's ticket. So, unless I get a complimentary upgrade (yeah, right!) I won't get the FastTrack access. Also, my friend isn't travling with a US passport, so we might have problems with immigration.
But this is an intersting thought that I hadn't considered before. I will definitely have to give it a shot next time. Thanks!