Platinum homes at Haven sites, worth it?

[triplets]

Looking for a nice w/end break on the 1st July, been offered this at £399, any recommendations, its at Church Farm in Sussex.

Anybody?

No idea re platinums, had one long w/e at a Haven, dd couldn't do any of the advertised activities she wanted because you must book them all weeks in advance. They never told us that bit, so I'm telling you just in case I'm not the only person alive that didn't know.