Cancellations info from the site: "You can cancel your camping reservation up until 7 p.m. CST the night before your arrival to receive your refund minus a $10 cancellation fee and the non-refundable $6.50 reservation fee when made online or the $8 reservation fee when made at the call center. If you cancel on the day of arrival, you will lose the fees for two nights camping, plus the cancellation and reservation fee."