It really isn't too much of a problem if you intend to stay around the hotel during the day times, in fact in most of the major ones you would hardly know any difference during the day, wiaters serve you now outdoors by the pool as well as in the restaurants. In the evenings, the city is manic! Traffic is frightening, driving gets worse and if you are on the road between 4:30 and 6 watch out, everyone is in a real rush to get home to break the fast. If you do go out, it wil be frowned upon if you drink, eat or smoke in public places, I do not even smoke in my car during this time and I am not muslim but I do respect their custom. Also, eating out in the evening as someone said earlier is fantastic, most major hotels set up sepcial Ramadan tents, where you eat and chat, play backgammon with anyone - its a great time! There is however no live music or officially dancing! But you will hear music everywhere, although not live! Enjoy!!!!!!