I visited last year, good day out well worth going for the selection of cars.
Also if its there this year, the wall of death is well worth queing up for, apparently the oldest one in existence, With some old Indian motorbikes and an adapted car
Saturday is usually practice day and Sunday, race proper. As others have said, always nice people and you can wander through the paddock getting close up to the cars. The hill climb involves many different classes, usually classic cars, as well as hill climb specials. Bring a picnic basket!!!