I loved Center Parcs more when it was not center parcs (the one in the lakes) but the name escapes me.
i've gone probably about 10 times or more over the years, always got a decent deal or when compared to abroad holiday was reasonably comparable. We generally went abroad every 2nd year. My boys were big lovers of the pool so we used the "free" activities a lot and also booked other stuff slightly off peak, so bowling in the morning, table tennis or tennis during lunch or dinner times, took our own bikes and went down to the pond with fishing nets.
As people who never ever had any other child care, it was a godsend being able to put them both into a club, even as babies, and get a meal to ourselves.