Cancellations must be sent by e-mail to firstname.lastname@example.org. All cancellations require confirmation by the organizers. Cancellations up until August 23, 2023 are eligible for a refund, minus an administration fee of CAD$100. Cancellations received after the deadline are not eligible for a refund. Substitutions will be accepted, but the organizers must be advised by e-mail of the new participant's name and contact details.