For waiters, porters, room attendants, tour bus drivers, taxi drivers and tour guides; tips are a nice bonus to add to their often pitiful wages. Tips can also ensure speedy and more attentive service. In simple restaurants or stalls along the road, tips are not usually given. The tour bus driver(s) will expect a tip relative to the amount of time for which he has driven you, as long as he has performed his job adequately. About 50p (per tourist) per day is a good estimation. The tour guide will also expect a tip relative to duration of service, and £1 or € 1 - € 1.20 (per tourist) per day is a guideline.