In '96 in Australia I flew in a 15 seater from Bundaberg (North of Brisbane) to Lady Elliot Island on the southern tip of the Great Barrier Reef. I can't remember exactly, but they either weighed us or asked our weight before boarding. Lady Elliot Island is the only island on the reef with it's own airstrip. Here's some pictures from this year:
http://people.hws.edu/mitchell/cards01/LEI1.html
[This message has been edited by FlyByMike (edited 12-04-2001).]