Full routing: SEA/ORD/MIA/SJU At 4:00 a.m. Thursday morning we received an e-mail advising that our SEA/ORD leg would be leaving 45 minutes late, which was worrisome as that meant we would miss our 767 ORD/MIA connection. They originally booked us on a later flight in coach, but I called and explained that I don't do coach, especially on a first class ticket and they put us in first on a 757. Our SEA/ORD first-class experience on AA was much the same as a first-class experience on UA except the gate agents didn't seem as friendly. When we got to Chicago, our original flight (the 767) was still there, but they had given away our seats. We were a disappointed, or course, because we had been looking forward to the AA international business class experience. UA would have saved our seats for us and protected us on the later flight, but I guess that's a difference between the two airlines. In the end, it turned out to be a blessing that we were switched to the later departing 757 as our original flight was delayed so long that we never would have made our MIA/SJU connection. As it was, we had to run to our MIA/SJU connection and were among the last to board. Thank God for the train that runs between the gates. Throughout the trip, the gate agents were a lot less friendly than UA gate agents, but the on-board experiences were pretty much the same. Joe likes the seats better on AA because the seat itself slides forward in addition to the seat back reclining. The food was pretty much the same as that offered on UA and they did not appear to as for choices based on status as we have no status whatsoever and were always asked first. Hopefully our return trip will go as smoothly.