The campground in general was very nice: playgrounds and a lake nearby, and suitably close to a number of small towns and the Alder Lake Dam to have stuff to check out.
Unfortunately, our campsite (53) wasn't trimmed back sufficiently, so the grassy area where you'd normally put a tent was about 3-5 feet smaller than shown in the picture on Tacoma Power Parks' site, and we ended up having to place our tent half on gravel and half on grass for it to not be too close to the firepit.
The campsites in the main loop are much too close together and lack sufficient isolation via greenery, and the drunken revelry from four campsites away was close enough that it kept the four of us awake until just after midnight.
We'll definitely come here again, especially now that we have a list of good sites in our notes.
Sites to avoid: 53, 59, 60, 68.