Business and Professions Code section 25691

(a)

An ordinance establishing or modifying an entertainment zone shall not authorize consumption of alcoholic beverages during the hours in which sales of alcoholic beverages are prohibited under Section 25631.

(b)

An ordinance establishing or modifying an entertainment zone may only authorize consumption of alcoholic beverages during the hours in which at least one licensee within the boundaries of the entertainment zone is permitted to sell alcoholic beverages for consumption on the premises.