Has anyone been to the Driffield Show- now at Wetherby ?

Im thinking of driving to Wetherby Racecourse tomorrow for day 2 of the Driffield Show- its about 45 miles from me.Just for a mooch about/trade stalls. Their website is poor in info- what time does it open to the general public ?I hate traffic queues- not sure whats the best time to get there to avoid the rush..... Has anyone here been to this new venue ??Also do they charge for parking or just for entry into the showground ?

Cath