We took a private day tour out of Palermo. When we stopped to buy breakfast , the driver cum guide had coffee and asked the guy at the till to add that to our bill. When we went for lunch, he tagged along, sat with us and ordered food, and wandered off when the bill came. I did not mind buying coffee or lunch for him, but is it not unusual for him to impose like this? Never seen anything like this in Europe before, and we have taken quite a few private tours. It was not just a matter of money, but of privacy as well. I thought in these parts of the world no one joined you at your table unless invited.