As a CP regular and a newcomer to the a French Eurocamp style holiday, the Eurocsmp thing is not quite the same. Yes the campsite had a great pool with slides and a lazy river but a whole order of magnitude different to the pool at CP. However, we had half decent weather, the kids didn’t care the pool was not as big as the CP one, they still spent the full 2 weeks in it, and there were plenty of things to do in the surrounding area. Similarly the static van was not in the same league as the CP villas, but it was functional, cosy and we spent all out time out and about (like we do in CP anyway) so it was perfectly functional for our uses. You fan posh up and get bigger and more luxurious vans, but Eurocamp is quite pricey anyway and you seem to pay a hell of additional premium for the bigger more luxurious vans.
You can book direct with the campsite to make it a bit cheaper if you have a campsite recommended, or I’ve been told that since the Dutch school holidays are slightly different to the UK ones you can book with a Dutch Eurocamp holiday company to avoid the school holiday premium if you week falls outside the Dutch school holidays.