I remember being on the Apron at Guam, (Civil), back in 1978 when a JAL B747, (100 or 200, can't remember now), called for start and was asked number on board, it was in the order of 530 and I'd never heard that large a load before on a commercial flight.
Apparently Guam was a favoured honeymoon destination for the Japanese and these happy little people weighed in at around 50kgs each with hardly any baggage.