Originally Posted by
atrich
By the way, the "waitlist" for upgrades (at least for Global Upgrades) doesn't seem to work very well. If you do decide to waitlist, I'd call 1-2x per week until it clears.
That never worked.
The only other thing you can try on domestic flights is making a booking attempt for FULL Y. If you hover over the upgrade section it may say UPGRADE AVAILABLE. If so, it is likely inventory is there.
Not perfect match though, but at least a starting point