Wow great to see those pics, I used to go there with my dad every year when I was a kid, when it was just a few fields, you could have a fire for free, you were allowed to collect firewood, pretty much do whatever you wanted. No one really seemed to know about it either, just the hardcore outdoor types.
It seems a lot more commercial now, last time I was there was about 2002 with my gf at the time. And it seemed like you had to pay for everything
Beautiful place though, I used to swim in the river next to the footbridge. Amazingly clear water, you cold see the fish swimming about. Many happy memories of that place.
Hope you enjoy it as much as I did.