always keep checking your flight times, AA likes to change the time 15 mins here 15 mins there. If AA does change your flight time and if the time doesnt work out for you, you can call AA and tell them the time change doesnt work and to find you another time on the same day, either an earlier flight or later, you will not be charged a change fee.
AA starts boarding first class first, then AA advantage members, then the back of the plane ending with the front of the plane.
AA plane are always full and will take standbys, AA sometimes overbooks their flights. We just flew home from las vegas and AA needed 5 people to be willing to be bumped for $300 voucher per person and put on the next flight out(red eye). I would have done it if we could have flown out the next morning. I would have called DB to pick us up and stayed at his house. Ddad said no.

(party pooper).
AA will announce to the passagers that only first class(20people) can use the front bathroom and the rest of the plane can only use the back bathrooms. It
stinks when you are in the first 5 to 15 rows to walk all the way to the back of the plane
AA does not hand out snacks anymore not even peanuts or pretzels, take snacks with you.
other then a few minor things, we fly AA all the time and havent had a major complaint yet.
Enjoy your flight.