(a) Minibars shall be of such design as to prevent access to alcoholic beverages to all persons who do not have a minibar key. The minibar key shall be different from the hotel guestroom key, and the mixed beverage permittee may not provide the minibar key to any person who is not of legal drinking age.
(b) A mixed beverage permittee may not provide a minibar key to any person other than an employee of the permittee or a registered guest of the hotel.