Hey, I was out there about two weeks ago and me, my parents my brother and my girlfriend all went to Knotts Berry Farm. If you get a Ralph's (grocery store in La) discount card you can get tickets from Ralphs for 29.99.
I'm not really sure how to answer. I did not make it to Camp Snoopy, which is suppose to have some things for Kids (ala toontown). They had some good rollercoasters, but not sure that all your kids would ride. There is a really great log ride and the water rapids ride is suppose to be cool, but it was closed the day I was there. Oh and there is a train that was actually a really cool old train with original woodwork and it was a fun ride around the park on the old train.
The thing about Knots is that if you go do it before Disney. Oh and the food and drinks are pricey, like 3.25 for a small drink. It wasn't too bad and I enjoyed the day there, but it just is not disney.
Knots has a western theme and had a decent western stunt show too. And for like 6 bucks you can "pan for gold."
The park is laid out kinda weird too. Knots does have a website you can look at to see what is in the Camp Snoopy, and Snoopy does come out to take pics, unfortunately I missed him. Anyway I'll end the post by saying I was glad to go to Knots, it was different and it is cool to say that I've been to the first amusement park in the United States.
Hope it helps!
Kevin