No, at T-24 there about 10 F seats open and I was #1 on the list. The "customers upgraded into first" number didn't change, and neither did my spot on the list (eventually slipped to 2), but the number of open F seats slowly dwindled. There was 1 battlefield. This is only a hunch, but I suspect that most of where the F seats went between T-24 and T-2 were to "buy up to Fs"