UPDATE: We don't need to limit the size of the waiting list - just the total number of paid registrations. This can hopefully be implemented alongside auto-accept.

This issue is mostly for consideration in the registration overhaul - we still need to think through the unintended effects/implications of limiting the waiting list.

Having a limit to the size of the waiting list has two benefits:

• Prevent additional stripe fees on payments that will need to be refunded
• Prevent absurdly large waiting lists on popular competitions

Any attempted registrations once the waiting list is full would be rejected on that basis.