It's all been said...
Great access, some incredible old and new machines, if you are a petrolhead, you'll love it.
But, as has been said, there's shed loads of upper class arrogance. The busiest food stall is the champagne and oyster tent, $10 for one flute and two oysters iirc. And the queue was huge.
The thing that struck me the most was the absence of laughter. I don't think I'd go again but hey, you got free tickets, fill your boots.
MaxAus