Although homosexuality does exist on the ground in the UAE, it is actually illegal, and so it is best not to declare that you swing that way. That said, you don’t need your gaydar on to notice where the gay scene takes place. The secret is to not flaunt your sexuality and you should be fine. If you do, and you get caught, the penalty is 10 years in jail. Or reference, that’s 6 years more than possession of drugs. The term used to describe this crime is consensual sodomy. Be wise to the culture, and you will not have any problems.