Originally Posted by MSPeconomist

G inventory may become available a week or two before the flight, but I have observed cases where close to the DM window V becomes available but never G. Hence DMs and PMs would be upgraded before you as you are not competing for the same inventory space. In this case, assuming that you have also requested the Medallion free upgrade, you might be upgraded if V is available at your window. You have a reasonably high fare code and this plane has a large FC cabin, but of course it depends on whether this is an elite heavy route and the day and time of your travel.

At the airport, all remaining FC seats are available for upgrade and there is a single upgrade list. If you were a DM or PM upgrading with a SWU that is correctly coded, you would be at the top of the list, IIRC ahead of full Y fares and just behind folks with paid or award FC tickets waiting for FC seat assignments, a group that can be large when IROPs happen. I believe that upgrades with miles are in the same category as SWU upgrades, but I do not recall seeing the code mentioned for GMs, FOs, or nonelites requesting upgrades with instruments.