In the early 2000s, MAN was achieving well over 90% loads before they went to 777s May also depend on business class sales so it'd be good to know how full of fare-paying passenbers that class is.
Generally, for NCL, i'd imagine it's going to be a 2 class 77W that's earmarked (427/442 seats) and at present, it would only be around 60% full passenger wise and in addition, cargo capacity may be a consideration - EK's recent blurb on MAN indicates that that their cargo carrying ex-NCL and BHX is suffering at the hands of MAN.