Friday Harbor is famous for whale watching and views of Olympic National Park and Vancouver. You have to take a ferry to the island so you don’t need a boat (but it’d be great to have one, kayaks included). The campground itself has very large grassy sites with west-facing water views for great sunsets. The kids enjoyed exploring the beach and the big grassy areas where they could play games. There are good hiking trails nearby but we didn’t take advantage of them. Clean but basic with no showers but real bathrooms. There’s a tiny grocery store on the island, but I’d get on the ferry with a full tank of gas and all you think you’ll need. There’s a lot of ship traffic which I think adds interest, but you may be annoyed if you’re looking for remote nature experience...but orcas!