Does anyone have recent experience with a miles/$$ upgrade from economy on a TATL? Wondering if it's from Economy to Premium Economy, or all the way to Business. Flew and upgraded Summer 2020, economy to business, but I'm wary of the 'next cabin of service' wording; may have been there in '20 but can't remember.
Flying mid-Feb, and the route has been been pretty empty, entire rows open in the back, not sure I'd want to burn miles and money for PE if I can get a whole row for free...