Back to the topic and getting away from the uneasiness Sillibizz is causing....
Another option is going a little farther north and hit Lake Stevens. Not sure how old your kids are but it has a huge and very cool playground the community built a few years ago. I spent many days there when the kids were little pants wetters.
There are also clean porta potties (kybos as we say in Iowa) next to them. Also, if it's raining this is probably the best protected course there is.
It's not real long, and the baskets piss a lot of people off, but it's challenging enough.