I'm booked in for Sherborne again this year, depending on the weather forecast obviously. Exhibitors have to be on site before 9:30, which is a bit of a challenge
However, for the last couple of shows, they have operated a 'sports car' parking area right next to the main exhibition field, which doesn't have the time restrictions. Basically, if you turn up in something worth looking at, you get directed in there I think.