We've had 10 years of brilliant holidays with Eurocamp with our children, 9 and 12. We are already booked again for this coming summer.
I'd agree that you can tell they're trimming extras these days, ie our 'Welcome' package in the post before we leave had diminished massively from toys for the children, quality canvas beach bags, maps of the area etc etc, to an attachment to print off with information about the area.
However....
We've had only lovely memorable family holidays. We have visited the Vendee and Brittany and have had clean, pretty campsites (4 star) with perfectly acceptable tents and caravans.
We investigated booking direct with the campsite at the place in Brittany which we have visited twice already and it was more expensive, not cheaper as suggested.
Our first holiday with our dad, age 2, was so special. We stayed in a tent on a pretty, clean site full of families with toddlers/younger children. We loved the flexibility it offered- beach in the morning, back to the tent for nap time, lunch, pool for the afternoon, BBQ then she slept at 730 and we read our books and drank wine, it was bliss.
Pick your site carefully- we always go for 'small' and 'peaceful'. We've had excellent couriers, quiet sites, just fantastic holidays. I can let you know which if you would like.