In order to arrive at MVPG75K in November rather than December, my plan to earn the needed ~100 miles is to request a same-day change for my next flight coming up soon.

It is my understanding that when your reservation is for a nonstop flight and there is no other nonstop flight that same day for the route, you can call at checkin the day before and request a conventional one stop route with the same origin and destination.

Since I am on the phone with AS anyway about the reservation, couldn’t CS put me on the upgrade list right then and there, or even better, at that time put me in U space if available?