Members with a login can make changes and cancellations online via My Registrations. Cancellations received/processed by May 26, 2023, are fully refundable. Registrants who cancel after May 26, 2023, will be issued a refund minus a $350 cancellation fee. Substitutions are accepted. No shows and registrants failing to cancel prior to June 11, 2023, are responsible for paying the full registration fee and any pre-conference workshops fees. Special events (including spouse activities) or ticketed item fees are non-refundable. If you have difficulty cancelling online, you may contact Accounts Receivable at 703-907-6875 or​