My 12 & 13 year olds are keen to go back this summer. Granted they have the excuse of the younger sibling but are happy to go.
There aren't the same thrill rides as other parks, but enough with all the queuing I imagine. Also being a smaller park they may be planning to send the children round in small groups with no adult which I guess will make them excited. There may also be a couple short children in the class who couldn't ride everything at bigger parks? I would of thought the water park would amuse them too - OK it's might not be aimed at their age, but it would be a shame if at 12 they were too cool to like messing about splashing their mates.