I took an offer for a first class upgrade on a flight a few weeks ago and am spoiled for good now! I have a flight to Alaska coming up booked and want to know the best way to "position myself" to try for another upgrade. I am aware I can let the airline know I would be interested in an upgrade 24 hours in advance (for AA). I am assuming I would just call (my travel agent has proved useless in this endeavor). As far as being at the airport, do I just inquire about the possibility? Stand by closely and be ready to leap with my credit card? Thank you!