A 15% service charge is usually included in the hotel bill. It is customary, however, to tip the junior staff and cleaners, who are often underpaid. A service charge is generally added to a restaurant bill, but it is common practice to leave the change, or to add as much as 100000 IR as a personal gratuity. Tipping a tour guide is a matter of personal choice, but certainly tips are always welcomed! Attendants at service and gas stations expect to be allowed to keep the change. Tip attendants in those religious and historical monuments for which no entrance fee is charged. For toilet attendants, if any 20000 IR is enough.