No on-sale licensee of any class within the town shall permit any person under the age of 21 years within said licensee’s building or premises except where said person under the age of 21 years is in the company of his or her parent or guardian. No person shall sell or give any intoxicating liquor to any person under the age of 21 years; nor shall any person sell or give any non-alcoholic beer or wine to any person under the age of 18 years.
(2008 Code, § 5.2.11) Penalty, see § 111.99