Used an RUC to waitlist an upgrade for a flight that had J4/Z0 availability before check-in, and I am now 5th on the upgrade list. Oh well. Incentive not to go for platinum again, but good on Delta for becoming more efficient.
Out of curiosity, does anyone know how RUCs are ranked (excl. GUCs which I understand are above the list)? Do they follow the same order as medallion upgrades or are they first-come?