In the event an Exhibitor must cancel his request for exhibit space, the rental fee paid will be refunded in full (less a 10% processing fee) if the notice of cancellation is received by AOPA in writing prior to April 1, 2022. No refunds will be made after April 1, 2022, even if space is resold and the exhibitor is responsible for the total balance of the space rental charge as outlined in the above payment schedule. In addition, the right to use the complimentary exhibitor registrations granted by this contract will be left to the discretion of AOPA. AOPA reserves the right to terminate this contract immediately, and to withhold from the exhibitor possession of the exhibit space and all space rental fees paid if, (a) the exhibitor fails to pay all space rental charges by April 1, 2022, or (b) the exhibitor fails to perform any material terms or conditions of the contract or refuses to abide by these Terms and Conditions.