Assuming the 6 segment thing works, my girlfriend and I will be Silver Medallions at the end of Thanksgiving weekend. How do upgrades work? I realize it is difficult to get upgrades as a Silver, but I don't want to miss one if possible. How do I go about requesting upgrades? I have a trip planned for Christmastime where we are flying on K fares, so I'd like to try then, just to learn the process. I would appreciate your help.

PS I will actually have 29 segments thi syear, more than I've ever had in a year, so I'll ALMOST make it legitimately.