This rule applies to all the cities, including Dubai, despite its more forward approach towards tourism. Unmarried couples cannot share a room or be seen in public. Although this is a factor, as long as one pretends to be married and not flaunt their unmarried status, it will rarely be an issue. Other than holding hands, any form of public display of affection, even between married couples is frowned upon and is unacceptable. It may well be illegal, and there are reports of convictions as well! Homosexuality is also a criminal offence with dire consequences, so bear in mind these facts before planning any vacations to the UAE.