No person shall maintain, operate, or assist, in any manner, the maintenance or operation of a retail alcoholic beverage store or package store in premises which are not separated from adjoining premises on which any other goods, wares or merchandise are sold or services are rendered by nontransparent walls, broken only, if at all, by a passageway to which the public is not admitted.
(`83 Code, § 3-124)  Penalty, see § 110.99