I love Center Parcs, it's great place to go with the family. But we always just bring our own food, pack our bikes on the car and usually eat out at one of the restaurants maybe once per stay as a special treat. I assumed most people did the same? The restaurants are hugely overpriced(imho).
A lot of people certainly always did that, but now it feels like most people are. The restaurants have kept their high prices while seemingly losing most of their clientele. I wouldn't be surprised if they introduce cruise-style dining credits or something with the higher priced lodges to mitigate it.