I spent 3 months in Dubai on vacation, so I might have some insight. I have Persian roots, so I didn't stick out as a sore thumb when I was there.
Anyways, Dubai is probably one of the most modern contries ever. The local Arabs don't do sh!t as they are loaded with some serious money. So you have all these immigrants coming from China and other backwards countries working there for pittyful wages.
The good thing about being a Westerner in Dubai, is that you can buy booze from special shops and bars that only cateer to foreigners. Even though Dubai is pretty modern, please keep in mind that it is afterall a muslim country. This means that you should keep your head down, and don't go overboard with either the booze or the hunt for some ass. It can get your ass in some serious trouble.
Now there are tons of P4P girls around, there are chineese hoes walking up and down the streets all day long. Needless to say, stay away from them. When it comes to picking up local chicks, things kinda get tricky. As mentioned above, it is a muslim country and most if not all females are wearing hijab or covering their bodies. I didn't have any luck by going up to females at the mall and striking a convo. But maybe since you are caucaisian you might have better luck. However I would advice against this, as the male arab relatives are very overprotective and this could lead to problems.
My best suggesiton would be to get to know some locals, hand out with, become friends with them and then get introduced to females through them. From experience arab chicks are horny as hell. It is not unusual to go to the mall and see a group of females covered in black drapes from head to toe, checking out some sexy lingerie from Agent Provocature. In public they try to be all pristine, but once they are within the four walls of the house, the true slut in them comes out. Due to the whole 'virgin until marriage' thing, most of the arab chicks I met (5 in total) were into anal, and they could suck a football through a hoze. BUT don't think about ONS and being a butterfly when you are there. If you get involved with an arab chick, and then dump here, there is a good chance that her male relatives will hunt your ass down. I got by by keeping my head down and flying under the rader. Discretion is key.
If you want to get tons of girls, go to Japan.