In this section, “premises” includes a building, parking lot, picnic grounds, terrace, or grounds that form an integral part of the licensed premises. Except as provided in subsection (c) of this section: an individual may not consume, display, or possess on the licensed premises an alcoholic beverage not purchased from the license holder; and a license holder may not allow an individual to consume, display, or possess on the licensed premises an alcoholic beverage that is not purchased from the license holder. A holder of a beach and amusement park license may grant written permission to a patron of the license holder’s beach or park to bring and consume on the licensed premises an alcoholic beverage not purchased from the license holder.