Our stand did as it was told, only pre-1990 cars on there. My lad followed me up in his Focus RS, and then left it in the public car park and came in with me.
However, when we got in there and saw the amount of post 1990 cars (there was a whole stand full of post 1990's behind us including a couple of FRS's), he took my stand pass and went and fetched his in.
No one was policing the so called 'pre-1990' rule, even though those not complying could easily have been turned round on at least 3 occasions before parking up.
I'm afraid it's a case of 'when in Rome....'
Oh,and yes, get there before 8 if you want to avoid the queues, was just starting to build at the entrance when we came in at 7.50