We are happy to reschedule your kayak rental for a date/time that is available in the future. If you have purchased a kayak rental and are unable to fulfill your scheduled rental time we are happy to reschedule with ADVANCED notice. Please note, if you do not show for a prepaid kayak rental and receive no prior notice, we will be unable to refund your payment. Thank you for your understanding, we are a small business with a limited inventory available for our customers!