Any permittee who, either personally or through such permittee’s servant or agent, allows any minor or any person to whom the sale or gift of alcoholic liquor has been prohibited by law to loiter on the permit premises where alcoholic liquor is kept for sale, or who allows any minor, other than a person who is at least eighteen years of age and an employee or permit holder under section 30-90a or a minor accompanied by the minor’s parent or guardian, to be in any room where alcoholic liquor is served at any bar, shall be subject to the penalties described in section 30-113. For barrooms consisting of only one room and for permit premises without effective separation between a barroom and a dining room, an unaccompanied minor may remain on the permit premises while waiting for and consuming food prepared on such permit premises. No minor may sit or stand at a consumer bar without being accompanied by a parent, guardian or spouse.