If you put in at Kayak Point, not too far a run from Everett, you can camp at the Park, too. I don't think there are any waterfront sites, but there are some mooring buoys just north of the launch.

BTW, the best info on the web on launches in Washington is at http://www.iac.wa.gov/maps/default.asp.
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Give a man a fish, and you'll feed him for a day; give him a religion, and he'll starve to death while praying for a fish.