definitely no passengers, mate
I haven't been to one of these days in a few years... but I imagine they'd still be pretty busy! they're quite good in terms of the number of cars on the track at any one time.
If I were you, I'd go turn up about lunchtime as a fair few people either break down or pack up before the end of the day!
unfortunately, I've been taking a little too much time off work lately to take another day!!