Pre-event info from AdamWilkins says arrival until 7:30pm for camping. I'll be there earlier than that but worth knowing if you get delayed. I'm only bringing coffee stuff for the morning and I'll use the on-site cafe for breakfast.
Pete, I'm guessing you've not been there before so... If you're approaching the circuit from Blyton village yor sat-nav might tell you to turn left into a field before there'e a turning (some do) but just continue until you see the entrance (there's signs and flags) then follow your nose past the grass-track circuit for about 1/4mile.
Weather is looking indifferent, though the forecast is improving over what was showing earlier this week. Currently light showers Sat afternoon but evening, overnight and morning looks dry with rain coming in mid afternoon.
Think I'll squeeze the wets in... That should ensure it stays dry