I've heard mixed reviews too. I think it's just that everyone has a different perception of the park and has different expectations. I really liked most of the attractions, though I could do without the games. I think a lot of people expect an atmosphere more like
Disneyland, which leads to disappointment.
A friend of mine took her 3 girls, I think at the time they were about 4-7-11, and they had a good time. I think there are attractions for kids to enjoy too.
The absolute must-see is Soaring Over California. After that, CA Screamin' (the rollercoaster), Grizzly Rapids (raft ride), and Maliboomer. The Sun Wheel is great too -- remember there are stationary cars and ones that slide (I went on the stationary one...I know some people who got sick on the moving ones!).
They also have Muppets 3D and A Bugs Life like the ones at WDW. I enjoyed the Golden Dreams movie/show too, it's a nice midday break. There's another rollercoaster, I can't remember the name right now...it looks like a kiddie-coaster, but kids can ride it too, and I actually thought it was kinda scary!!
They also have kids rides, a rocket (?), merry-go-round (with sea creatures). There's also the orange stinger (swing ride).