(a) No minor shall enter or frequent any room, place or premises, where intoxicating liquor is drunk, dispensed, sold or offered for sale, unless accompanied by his parent or legally appointed guardian, or unless such minor on his own behalf, or on behalf of the parent, guardian or employer of such minor, shall enter or frequent such room, place or premises for the purpose of transacting lawful and legitimate business with the owner, proprietor or agent thereof. No owner or proprietor of such room, place or premises where intoxicating liquor is drunk, sold or offered for sale, or his agent, shall allow or permit any minor to enter or frequent such room, place or premises, unless accompanied by his parent or legally appointed guardian, or unless such owner, proprietor or agent allows or permits such minor on his own behalf, or on behalf of the parent, guardian, or employer of such minor, to enter or frequent such room, place or premises for the purpose of transacting lawful and legitimate business with the owner, proprietor or agent thereof.
(b) Whoever violates this section is guilty of a minor misdemeanor.