Warning Under the Liquor Licensing Act 1990 it is an offence: (a) for liquor to be delivered to a person under the age of 18 years. Penalty: fine not exceeding 20 penalty points ($3,140 for 2016-17); (b) for a person under the age of 18 years to purchase liquor. Penalty: Fine not exceeding 10 penalty points ($1,570 for 2016-17).