I am also traveling AA in September. I leave September 23 @ 6:40am from NYC-MIA and then connect MIA -Aruba, arriving in Aruba @ 1:25pm (CAN'T WAIITTT!

). After reading this thread I called AA and asked them of the possibility of cancelling flights due to lack of passengers (my flight MIA-Aruba is also pretty empty!). I was told and even promised that AA does not have that policy and they do not cancel flights due to "empty" planes. I travel AA almost every year to Central America and have had my itinerary changed a few times by maybe an hour or 1/2 hour delay from my original departure schedule. But I can honestly say I have never experienced a flight cancellation! I hope this helps, I am trying to stay possitive as well and I am holding on to the AA representative's promise!

Good luck!