At the more expensive restaurants, the service charge is included in the bill. If this is not the case, then a tip of around 10% is customary. This also applies to taxis, on top of the meter price. Tips keep the Middle East running smoothly. People who offer services to you directly (porters, door-openers and room service/cleaners) will all expect a tip. Your bus driver(s) will expect a tip relative to the time that they drive for you, assuming they have performed their duties satisfactorily. A good guideline is around 50-70 cents per day (per traveller). The English-speaking local tour guide will also expect a tip, again assuming satisfactory service, and we suggest around the equivalent of €1 per day.