All retail licensees shall maintain a schedule of the prices charged for all drinks of alcoholic liquor to be served and consumed on the licensed premises or in any room or part thereof. Whenever a hotel or multi-use establishment which holds a valid retailer’s license operates on its premises more than one establishment at which drinks of alcoholic liquor are sold at retail, the hotel or multi-use establishment shall maintain at each such establishment a separate schedule of the prices charged for such drinks at that establishment.