This is from an article in the Feb. 18 issue of Maclean's.
Things you can't do with booze:
Drink under the age of 21.
Purchase "heavy beer" (over 3.2 per cent alcohol) in restaurants after midnight, or from corner stores.
Expect your restaurant server to produce a wine list. You must request it.
Drink without eating. Except in taverns, or in "private clubs" where temporary guest memberships cost about US$5 for a two-week period.
Order doubles. Limit is one ounce of alcohol per mixed drink, although "secondary alcoholic flavorings" are allowed in exotic mixed drinks.
Have two drinks delivered at once to one individual. Server must set down one drink, then perform some other duty, such as shifting an ashtray, before setting down the other drink.