Originally Posted by
mherdeg
Worst are probably
(*) an upgrade that is gonna clear anyway, e.g. SFO-LAX on a sUA 757 for a 1K on an H fare on an empty weekday.
(*) an upgrade that is not gonna clear but will lock up your GPU for months, e.g. the time we applied a GPU on a W fare ORD-LHR while the cabin was booked 0/26 and gradually watched it fill up over the course of months while our upgrade never cleared
Agree with these.
Recently I burned 2 expiring ones (gifted by another FT'er in the CC giveaway thread) for DEN-GRR CR7 this Friday. Waitlisted on SMF-DEN
My wife is on a separate PNR so there was no other way to get her upgraded even though I may likely have cleared both flights by CPU on my own.