YYZ-SFO
YYZ-SFO Oct 15. $399. R5 at 24h. Accepted. Flight boarded with J1 R1.
The wait lists, even for Prestige e-upgrades, clear at T-24h. Since I can't begin the check-in process until T-24, the e-upgrade list should clearing should beat any LMU request by a minute or two.
It's upgrades at the airport and op-ups that are being replaced by LMUs.