A330s from MAN
probably spend the best part of 7-8 hrs each way with the rest on the ground.
767s from MAN
come in on consecutive days, again 8 hrs each way or thereabouts
-Orlando everyday except one. 8-9hrs each way, I'd guess.
Don't know the schedules, but PK
seem to run their 747/777 fleet pretty hard on the Pakistan-MAN
I knew someone who worked at Rolls Royce and Royal Brunei had problems with their 757s a few years ago because of under-use.