It shall be unlawful for any person or persons who own, manage, or lease an establishment selling alcoholic beverages at retail to allow any minor under the age of 18 years to frequent or otherwise remain in the said establishment unless the said minor is accompanied by his or her parent or legal guardian, and unless said minor remains seated with, and under the immediate control of, the said parent or legal guardian.
(Neb. RS 53-134.03) (1991 Code, § 10-116)