Of course we do caravan holidays! We just got back from one ourselves. I enjoyed it, as did my ds, but I wouldn't describe it as having everything for the kids.
We went out on a lot of the days and were part of a large group so had plenty of company. Mt ds is 11 and wasn't impressed with the kids club (told old for it now I guess). But when we did a similar holiday 2 years ago he loved the very similar kids club, so possibly your ds would enjoy it.
We went here with this company:
www.parkholidaysuk.com/uk-holiday-parks-caravan-holidays-breaks/park-map
and went to winchelsea beach.
Outdoor pool, play area, gaming room (machines & video games), takeaway, kids club, bingo and evening entertainment with bar.
Camber sands close by (lovely sandy beach), pebbly beach just opposite, hastings near for seaside stuff and definitely recommend a day at knoxhatch
www.knockhatch.com/
Very enjoyable holiday, but wouldn't say that the site has everything for the kids, but depends what you want at the site I guess. We found it good but definitely needed to go and do other stuff in the day, even if it was just scooter along the sea wall, throw frisby at the park and paddle in the sea (all 2 mins walk across the road)