If you want the full experience you may want to do three jobs.
Wetsuit stripper is fun, and then go on to work a bike or run aid station, and then maybe be a catcher at the end of the night.
This year my friend Lynn helped out in the transition area and then went on to work at a run aid station.
My other friends were catchers. they liked it, but said it could be a bit gross. Lot's of people throw up at the finish line... eeks
But speaking of gross, I wouldn't want to be a bike catcher since some of the guys pee on their bikes.
And I know that the air in the change tent can take on quite an aroma. My friend Lynn also worked the T tent one year. She said a pro woman came in and pee'd in the corner!

If you have friends racing then I would say run course and finish catcher would be the best.

And watch out.... You just may be bit by the bug! ha ha ha