I didn't have reservations.  Securing a spot was easy enough using the phone at the ranger station (it was after the rangers had gone home for the day).  Most of the sites had a level spot(s) for a tent.  There was a picnic table and I fire ring.  There was a. very clean bathroom with flush toilet and shower (shower operated on tokens; I didn't use it).  Near to the restrooms was a high flow potable water spigot (which I used to top off my water supply---tasted great). There were lots of families camping (August) and the expected noise that comes with kids playing.  The unexpected noise came from Hwy 504.  I was in the lower campground (closest to the highway) and the noise was omnipresent until about 1030pm and started up again around 530am.  If I were to return to Seaquest, I would make sure that I got a site further away from the highway.