I understand yes First Class passengers pay alot more money then Y but there is another side to this. If the goal is to try and get the aircraft boarded
as quick as possible so the flight leaves on time, on a aircraft like a 737 operating full I have exprienced some F passengers taking foreever to gettheir bags put away blocking Y passengers from getting to their seat. jetway is all backed up. Then if they do the drink service before take-off to F passengers this is slows the boarding process. Not an issue on a 777 or 767.