In Belarus you must be 18 years old to buy alcohol and cigarettes. You should show your passport to confirm your age. But if you are enough adult (having beard etc) sellers can sell it without passport. Drinking at the street is forbidden. You will be catch by the militia patrol and pay a fine. You can drink only at home and at special designated places (For example: http://www.nest.by/files/imagecache/...dnonews.by.jpg). If you are drunk, but not lying down on the street, sleeping on the bench militia will say nothing to you. But if you disturb other people you will be catch for the violation of public order. You will be transfered to the detoxication center and when you get sober you will pay a fine for the violations and pay for a staying at the center.