went here today and had a great time despite the weather - looked a right fool eating a 99 as the hail stones fell!
fantastic price - paid £3 for car park and only ice cream costs on top. Activities for 2yrs till at least 13/14yr olds.
if you want to go - follow signs for the rec ground / cricket ground parking, opp side of river to the town.
only downside was no coffee available.
the butterfly farm was good too though expensive for time spent in there. DD1 (3) loved it, esp. touching the butterflies and the millipedes