Originally Posted by
humesd
I'm not going to go to the hassle of cancelling now, they can find out at the gate.
Notwithstanding the other points you raise, I'm not sure that this is the best play. I understand that AA allows you to change the dates for free, so if you change to the latest possible date in the future, there is a non-zero chance that there will be some sort of schedule change that would allow you to cancel and redeposit for free. If you don't have an immediate use for the miles, it's worth a shot.