Registration is online only and closes January 6. NCTM accepts Visa, MasterCard, American Express, checks, money orders, and purchase orders. All payments must be submitted in U.S. dollars and drawn on U.S. bank accounts, money orders, or credit cards. Credit card payments will be subject to the appropriate exchange rate. Cancellation requests must be received in writing on or before December 30. NCTM will issue a full refund. No refunds will be honored after December 30, 2021.