A fun day out and a great theme park. The highlight for definite is the waterpark with a great array of slides and flumes, if you can push the budget a bit, it's worth getting the fast pass to skip all the queues. The 'dry' part of the park is less good. There are a number of 'high-thrill' rides but they're nothing more than you would find in a funfair in the UK. The main thing lacking is a decent roller-coaster! If you got a day spare though, and you want to do something fun, Wonderla is definitely worth a visit!