We used to go alot but the reason we stopped was my older children got bored (14 and 10) the younger ones 8 and 3 loved it and would go every weekend. I liked the pool but I can see why it gets dull for confident young people.
There are bikes but the site is small. There is a leisure club with some activities. A climbing wall. But once you have done things a couple of times thats it really.
My dd loved the horse riding centre but again there are only so many times you can walk/trot round the grounds.
I think its aimed at younger families. Of course you could take day trips out. But that may not be what you are looking for.
It is of course much much cheaper than Center parcs - but then where isn't!!!