yes there is a play area not very big as i remember. nice for small children to ride bikes around.
there are no hard standings but the ground drains well we had quite a bit of rain when we were there last year and the ground was fine. close to beaches walking distance if you dont mind a walk. the area was not as busy as other parts of cornwall. paradise bird gardens were worth a visit and we didnt have children with us.
the park and ride into st ives is another not to miss.make sure you sit on the right hand side of the train as it follows the coast and has stunning views. falmouth is not too far and you very often find when its raining on north coast the other side can be dry. you may need to book early if your going in high season. it was full when we were there last august.
good luck have fun.