How to increase event participant counts without creating constituents

We are working on an integration between our events platform and the RE events system for a client. We want the guest counts on our platform to be the same as the participant count on RE.

We don't want to have to create a new constituent for every participant (bookings may be anonymous, would require more complex deletion logic).

The CreateParticipant API docs say that you can create a participant without a constituent ID (here), but this fails consistently for us.

We also considered using a new custom field to store the participant count, but the API endpoint for that is still in preview here. We don't know when the preview will end.

Is there any way to do what we're trying to achieve here?

Answers