All alcoholic liquors served at such private gathering must be purchased from the on-premises licensee where the gathering is being held or from an Importer or retailer. All unused alcoholic liquors must be stored and locked immediately following the private gathering in storage cabinets set aside in the area used for the gathering. None of the alcoholic liquors may be removed from the specified area, except by employees of the licensee for the purpose of returning such alcoholic liquors to stock.
4 Del. Admin. Code § 602-2.0