Thank you for the response. I am talking about just flying standby on an earlier flight on the 31st (and the 5th). I understand that on the 31st, I can standby for a different shuttle flight the same day for no fee. However, starting the 1st, there will be a fee to standby for a USAir shuttle flight but not an AA or DL one. Since a USAir shuttle ticket is valid on DL and AA, could I just try to standby on the 5th on an AA flight with my US ticket and avoid the fee?