A SERVICE CHARGE BETWEEN 10 AND 15 PERCENT IS INCLUDED IN MOST RESTAURANT AND HOTEL BILLS. ADDITIONAL TIPS ARE ONLY CUSTOMARY FOR ABOVE-AVERAGE SERVICE. WHEN IN DOUBT JUST ASK IF A SERVICE CHARGE HAS BEEN INCLUDED. WHERE IT IS LEFT TO THE CUSTOMERS DISCRETION, 10 PERCENT IS QUITE ACCEPTABLE. A SMALL TIP IS CUSTOMARY FOR BELLBOYS,& DOORMEN IN TAXIS YOU SHOULD ROUND UP THE FARE TO THE NEAREST DOLLAR.