All rentals, technician bookings and show services are by Appointment first. Pop-up and last minute orders will be accommodated as possible. All rentals, technician booking and show services are on a Prepaid or COD basis, unless prior arrangements have been made. All rentals, technician bookings and show services must be confirmed by fax before the reservation is complete. (email is not sufficient for confirmation) Commercial Audio Video, Inc. accepts Visa, Mastercard, American Express, Preprinted Checks and Cash for payment on all services. Proper identification is required for all transactions.