The desk and vacation bids are done by dispatch seniority so keep that in mind on your first day as the tiebreaker is age. For a class with all the same hire date, the oldest is the most senior. I look forward to meeting all of you and just pay attention and don't argue. AA may not do things the same way as your previous airline and based on some OJT that I have done, AA seems to be more conservative than many of the other airlines. It's a good job so don't be an asshat and you should do just fine.