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I don't really care about stunt shows, raffles, etc...Lunch is nice, but not necessary, keep the cost down. The priority of most trackday riders ( not racers ) I think is lots of tracktime in a safe controled environment with passing rules and such. For example, TTD in May, "special" price event with 2 groups running sessions of 30 min really worked out well, IMO.
FIY, this was experienced riders td ( no first timers ) , no classroom, limited instruction, no lunch event. Maybe something like this would work well in other tracks