R space weirdness. I've seen a few instances where, just a few hours before a flight, I've seen a flight go J1 R1 .. and so while people are on the waitlist, they are missing out on a chance to actually go in and lock down the upgrade.

How? Check out, go to upgrades, cancel your waitlist if still waitlisted, apply again, and grab the upgrade.

You're welcome.

Doesn't hurt to run alerts on your flight!