At canyon park, just park across the street and walk there, you will be fine.
I would assume it would be OK to fly at one of the sports fields as long as no one is using it.
As far as kenmore goes, I am not sure, I haven't been there before.
We actually haven't had a meet and greet/fly yet. I am hoping to plan one sometime this summer. It would be awesome to not fly solo for once!