I agree that Knott's isn't on par with Disney, but I still like it. Last year I used the coupon in the Entertainment book and bought AP for the bargain brice of $75/year. That's quite a bit lower in price than our Disney AP which cost almost $500 for myself and my DD7.
We enjoy going to Knott's when it's not crowded.
We avoid the summer and weekends. We really enjoy going to the park during the day in October (and late Sept.) when the park is already preparing for the Halloween Haunt and they are only open until 5:30. You almost have the park to yourself. And yes, the employees can be slow loading, but when you can ride, one of the best coasters in So. Cal. The Excelerator and only wait for about 5 minutes, or less, I don't mind so much.
My DD7 loves the rides in Camp Snoopy and one day, just after Labor day, she rode over 26 rides in one day!
Again, the park isn't up to par with Disney, but who is?
Unlike other posters here, we have never seen dirty bathrooms, etc. so maybe we've been lucky.
Also, we don't eat in the Chicken Restaurant (too $$) but we do get chicken to-go from next door and eat it outside at the tables provided. We always ask for the chicken to be brought from the kitchen (an employee told us this tip) and that way we always get hot chicken. I love their chicken wings.
I guess to each their own. If I was traveling to this area and only had a few days, I would stay at Disney the whole time. However, if you have the time, check out Knott's. I know we like it better than Universal Hollywood-which has very little for small ones to do.