Beginning October 16, 2006, it shall be unlawful for a person to operate or maintain an adult entertainment premises in Prince George's County unless the owner, operator or lessee thereof has obtained from the Chief a license to do so, to be designated an "adult entertainment premises". Beginning October 16, 2006, it shall be unlawful for any entertainer, employee or manager to knowingly work in or about, or to knowingly perform any service or entertainment directly related to the operation of, an unlicensed adult entertainment premises.