Currently around 1050 cars booked for this, so there will be queues. Weather looks fine though, and there will be plenty to look at when you do get in.
The BMW car club GB is still the largest group with 62 cars (only just though, as Supercar owners UK are at 61).
My previous club, Yorkshire Supercars also have 34 booked, so there will be plenty of top metal.
Parking plan due Saturday on the website and you should get an email with your allocated area. Please check where you are going, as in my experience the ones that lengthen the entry queue are those who don't know where they are supposed to be.