If you haven't driven on this track before a training session is highly recommended. The instructors are usually racers and can get you up to speed on the racing line, the nuances of the track, and how to go fast. You'll end up having more fun, especially in the afternoon.
There are multiple dates available and yes you can drive there. You will need to sign up with one of the groups. I would suggest a session day first to get a feel for the track and car.
Check track schedule for track day providers at the orp website.
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