We went in peak time as I have a 12 year old. I found the accomodation shabby, the staff surly, the activities overpriced and badly organised. With the exceptionof the La Sappiniere (more expensive) restaraunt, the others were appalling.
BUT
I have to admit to being a bit of a snob and for me it wasn't my sort of place.
Longleat, my boss says, it smaller and much more friendly and stylish