Originally Posted by
expatboy
The seat allocation you make on AA.com should stick (seatshifters notwithstanding) - I have done this kind of itinerary before and used the AA locator to assign seats on the AA sectors with no issues. Looking at it in MMB you'd think I have no seat assignment since it shows the usual "Seat choice available at check-in".
MMB shows me sitting in row 6 (which I was assigned automatically) but AA.com has me in row 3.
As I said, no big deal - it's a 2hr flight and the worst I'm going to get is a window seat but i'll report back next week.