Now, I don't know if anyone is planning a trip here, but a word of warning. I went some while ago, and it was a very pleasant few hours. Went on a whim today and found that they have the nerve to charge £2.50 to park! So you pay over £30.00 to go in (two adults) and they want you to pay extra to park. It's not as if you can spend more than a couple of hours there anyway. A family ticket is £52.00 (unless you book on line and you can "save £6.00")
It's an expensive way to spend a couple of hours. I didn't bother after all!