​Members with a login can make changes and cancellations online via My Registrations. Cancellations received/processed by June 8, 2018 are fully refundable. Registrants who cancel after June 8, 2018, will be issued a refund minus $175 cancellation fee. Substitutions are accepted. No shows and registrants failing to cancel prior to June 24, 2018, are responsible for paying the full registration fees and any pre-con courses, etc., if applicable. Special events or ticketed item fees are non-refundable. If you have difficulty cancelling online, you may contact Accounts Receivable at 703-907-6875, or fax to 703-907-5951.