A cruise ship customer comes into the shop for a guided dive. Not a real nice dude. He brought a friend along without booking it, but that is okay for us. However, he argued with the taxi driver and refused to pay for two people or her take on additional people. As he fills out our liability waver, he realizes that the taxi drove off with his logbook and dive cards, dough.
So the moral of the story, be nice to other people, especially if you are on holiday in another country.