Originally Posted by
anabolism
So, a LFBU is offered via kiosks within the U.S., and signs overseas, and when offered Y-J is available to anyone in Y (award, discount, whatever), but when offered J-F is only for those booked into J on non-upgraded tickets. Is that right?
I'm pretty sure I said this upthread (too lazy to find it), but LFBU is strictly kiosk-based domestically and abroad, and is offered Y->J or Y->F (2-cabin) to anyone on paid tickets, and also to elites on award tickets.
Non-kiosk-based paid upgrades, offered on a discretionary basis outside the US, are not part of the LFBU program (which is totally, totally computerized), although they may have a similar end-result.