This campground has so much to offer! The lake has a sandy beach and shallow swimming areA and fishing! It's murky though. The sound has a lovely sandy beach as well, or a rocky beach to explore. The sites are well maintained and roomy.
The good: it's not far from Seattle and we had a great time beach exploring.
The Meh: The trains. They aren't kidding. They are loud and they are all night. The sites themselves are super tiny. One of our groups had to pitch their tent in the parking space.