I'm pretty sure I understand from reading the thread, but I just wanted to confirm given I rarely fly domestic with CPU eligible tickets. I'm GS and booked on a domestic flight in four days. If my reservation says CPU requested, is there any point in throwing an RPU at the flight to get better chance of an upgrade? or once it hits 72 hours, as long as there are >2 F seats, should I just call and request them to clear my upgrade?
thank you!