Hotel, restaurant and club liquor licensees, and retail malt beverage dispensers, shall at all times during the hours when the sale of liquor or malt or brewed beverages is permitted, maintain throughout the licensed premises illumination sufficient to insure clear visibility of the premises and to permit patrons to read a menu or newsprint with ease. Tables and booths available for the accommodation of the public shall be so situated as to permit clear visibility of occurrences at the tables or in the booths.
40 Pa. Code § 5.42