I had a wonderful couple of weeks in Dubai UAE in Jan 2005. Typically I tipped 3-6% for meals, taxis etc or rounded up. All was very appreciated. Sometimes I could not tip for lack of the local money. In no case was any disconcent noted and I always received a nice smile (if no veil hid it). I love it. I was never ripped off either. A wonderful place.
MisterNice