Upon arrival to the start line, pilots will undergo a series of briefings and blocks of instruction, followed by a bit of an individual "interview" by the race committee to determine if you are prepared enough to compete.
Expect to discuss (confidentially) your planned route, hazards, and risk factors you've identified - as well as your familiarity with the National Airspace System, airport operations, weather, etc. The race committee wants to help you succeed. They can advise you on your plan, identify other hazards that you may not be prepared for, as well as try to clarify things that you may be fuzzy on.
Although some pilots may be conducting the event as part of a "team" - each pilot must be individually qualified to do the race.
Following completion of the interview, expect to show your kit to the race committee and possibly take a quick test flight demonstrating your paramotor prowess and grace.