Adding a bit more info.
We did a couple of test events where eventbrite would send webhooks to zapier.
On the first test event we configured; whenever someone registered for an event... eventbrite would send an attendee.update hook even when the registrant was new.
This worked for us as we were trying to retrieve the custom questions in as few hooks as possible.
However, on other events, eventbrite didn't send an attendee.updated hook when someone registered like in the first.
We could get an order.placed hook, but it wouldn't show the answers to the questions, and I dont think it returns the attendee id as well.
Thanks