Before I signed up I just emailed
info@nesba.com to check if they had demos available on those days and they emailed me right back to say yes. I think this is more of a Yamaha dealer program where like someone interested in a new Yamaha the dealer can send them to the track to try one out or incentive (1 year free membership with nesba and 1 free track day) for someone to buy.. Doesn't appear they are actively advertising it..