anyone live around Haywards Heath with a toddler to advise day out?

[mad4mybaby]

Meet up with a friend monthly and both have 21 month old boys and she has a 4yr ds. Haywards heath area is about halfway. Can you recommend anywhere we can take them around that area? Or burgess Hill.

Bluebell Line, if they are train-mad? Can be a bit expensive though. Or Sheffield Park - lovely gardens, take a picnic on a decent day and just let them run around.

Isn't there a big pool in East Grinstead with a wave machine and lots of inflatables - The Triangle?