While trying to figure out how to get all attendees for a particular event, I stumbled upon paginated responses.
Given the remark (found on the pagination documentation page) that page sizes are set, I guestimated that only a page-number is required in the request, and page size need not be provided. Using the parameter "page_number" (as found in API responses) as a query parameter causes an error, but I later found that simply using "page" works. Example:
https://www.eventbriteapi.com/v3/events/EVENTID/attendees/?page=2
It would be helpful if the documentation makes mention of this. If it's already in there somewhere, it clearly lacks the <blink>, <em> and <h1> tags ;)