We live right near one. Went regularly as a youngster and my first weekend job was in one of the treat shops there.
It was pretty cheap, and the whole thing (bar the huts in the woods) was under a huge glass dome, so you could go in December and the dome was like 27c it was great.
Then the dome burned down. And it was just shit then. And that's what all the others have apparently been like since day 1 
The accommodation is terrible. Tiny foam type sofas. Far from luxurious. Have stayed in more executive lodges and the cheaper ones. All pants for the price.
Food? On-site restaurants are durge. If you are thrilled by a less competent Café Rouge than the one you find on the high street, then CP is for you.
And what gets me the most, is that nothing is included! That premium price is just for the terrible accommodation! Bowling? That's £45 please. For a shitter version of the local bowling alley with proper facilities, where they charge £22.
The pools are good. They can have that.
I can not fathom why anyone would actively choose CP. We can afford it. Most can. But I hate bad value, and that's all it represents now.