Unfortunately, (or fortunately), ordering and drinking alcohol becomes a bit of a closet activity during Ramadan, even in Dubai. The workaround if you are in a hotel or resort and you need a drink during the day is of course to plan ahead and order the appropriate CDT to be sent to your room the night before. You can enjoy said CDT laying back on your bacony. There's other more devious ways, involving Philipino Bell Hops but probably not worth the hassle or the potential of having to deal with hungry and thirsty policemen and magistrates on a hot August afternoon.