Originally Posted by
kaka
1) The night before. PERHAPS.... if it's too early they'd probably tell you to change the ticket. but given 504 departs at 0905 you'd lose lounge time (504, 450 to NRT; 542, 548 to HND are the ones that consistently runs F) yet if you arrive late enough it might be at station control already which means standby ok.
2) I have never tried: if you have a bit of time maybe you can get to HND at around 2pm to ask. if all fails you have 2.5 hours to get to NRT.
Good news is CX542 opened up today with saver space!
It has gone from F4 to F0 to F2 to F0. Today F2 showed on EF (set an alert). Pulled up BA in the morning no avail, but this afternoon BA revealed Z class, and AS was able to make the change in 5 minutes.
Thanks everyone for the advice.