We went to the Irvine Adventure Playground in August. It was a ton of fun. And since our whole family was free, it was a great value. I highly recommend it for families with kids who like to play in the dirt or get wet, or climb on things. We went with the Bushmans, Wilsons, Ortiz' (I never did understand how to make a plural with last name that ends with a z) and Julie (with her nephew). All the kids had a great time smearing mud all over each other, and at the end, all of the grown ups had a great time smearing mud all over Julie. Here are some of the pictures.