The best part of Dubai or UAE is that alcohol is available freely, can get drunk until in trouble with the system. As per the law you are supposed to consume alcohol with permit only, but freely available without permit or even id check. Anyone can buy buy quantity specified from the duty free on arrival also. Ironically if caught by the system, you will be punished of consuming alcohol. That's why we had permit even though we dont buy from the licensed stores(always get from duty free which was almost half the price). The moment law enforcement comes into place, you are charged with consuming alcohol if you don't have a permit