So what happens when you arrive at the airport needing a ticket reissue and the AA rtw desk is closed? I believe ANC, for example, doesn't ever cross paths with the desk, since all their traffic is very late evening.
We ended up there needing a change from ANC-DFW-LAX to ANC-ORD-LAX. I'd talked to the rtw desk the day before and set it up, but apparently they couldn't simply put a note in the record saying "rtw desk sez it's okay to issue tix, just remember to get $75 for the chore".
[BTW, while there are one or more really great agents on the AA rtw desk, there are also some that make me wish they'd outsource to India. At least then I'd always be able to talk to someone who was polite and listened to what the passenger was saying. Flame off.]
So the check-in agent at ANC has no idea what she's supposed to do. I explained, and showed her an MCO from a previous change, but she elected to resolve the matter in a way that was very, very friendly. But I think an agent with a different attitude could have firmly said "if you want on my plane, you're gonna have to buy a ticket I can understand" and no amount of whimpering would have made it happen the way we know it should.
BTW, my next segment is LAX-LHR on AA, but the coupon (on BA stock) presently has a BA flight number. By show of hands, how many think I should have that ticket reissued before showing up at the AA check-in counter?