I have a RT this weekend, Sunday to Tuesday, non-stop. I'm pretty indifferent about going for a number of reasons, but I'm free on Sunday so I'm going to the airport to decide. On Seat counter, the 4 N/S flights look really really full all day (except the last/fourth flight out, y-1, F-9).

If they ask for volunteers, is there any chance of getting a full credit for it (on a $350 economy fare)? I'll fly this route another 8 times this year. I don't necessarily want to give up the mileage and settle for a free RT with no mileage. If i can get a full credit voucher for $350, the true value to me is only $150 (basically I'm saving the change fee). Any other negotiation advice?