Originally Posted by
floridastorm
Yes, I guess I would have to inquire about the upgrade at BKK when checking in at the airport as there would be no way to do this at NRT considering I would be in transit and, to my knowledge, there is no facility available to alter tickets while in transit.
There are, there are airline service desks, and they can handle it at the gate as well. But the earlier point of asking is probably better from an availability perspective