when i was in the land of the long white cloud and on of the operators brought in a new 50 seater turbo prop and having not had this aircraft before in the country he was not sure if he wanted any cabin crew on it. he rang his mate then the minister responsible for it and ask him if he can have no cabin crew on it. The minister came back to him and advised of 2 required. he objected strongly and over a long lunch they settled on one cabin crew, which became defacto regs in NZ (that his story not mine).