Caravan holidays - any good companies or sites? SE England

[mybabywakesupsinging]

We are usually campers, but...it's so unlikely to be warm and dry at Easter...that we are thinking about a cosier option.
Plus the kids would love things like an indoor swimming pool / tennis courts / play areas that these parks seem to have.
Was looking at the Hoseasons park near Selsey - but anywhere in the SE would do for us.
Any advice or recommendations would be appreciated.

Depends what you want, but for a budget holiday I like Park Resorts.

Their Romney Sands site is beautiful - acres of long sands - pretty much deserted, on the doorstep of the caravan site with a huge fishing lake beyond. Indoor swimming pool, small adventure playground etc.

Best of all a miniature steam railway that has a stop at the caravan site, and goes from one end of that stretch of the Kent coast (think it's Dymchurch) where there are trad ice cream parlours, donkey rides and seaside fairgrounds to the other - (Derek Jarman's garden, spooky landlocked lighthouse and nuclear power station - very desolate.)

They also have small apartments at that site. Super cheap, clean and friendly. It's not glam or luxurious, it's basic. But it was great fun. I have very fond memories of taking DC there when they were young.

that's one of our favourite areas for camping, woodrunner...loads to do around and about, huge beaches and near enough to London to go for a weekend camp. We like Norfolk, too.
I will look at their website - thanks!