A Festival Event permit issued under this chapter shall be valid only for the time period approved by the city and vests no permanent rights in the applicant. A single permit may cover multiple events associated with a licensed business or non-profit in the same calendar year where each event is for the same activity. Single permits issued for multiple events may be revoked under AMC 12.72.110 or by providing 90 days written notice to the event sponsor by personal service or by certified mail at the address specified by the permittee in the application.