We happened to be on the Oregon Coast on a Friday night during nice spring weather. The website said there were still a few sites left so we drove there to secure one. It is best to reserve a site but we never do so you can still get a site the day of if you don’t have a reserved site and there are unclaimed sites.
Our site was 65, a tent site, in the full sun near the bathrooms. There are bushes that obscure your next door neighbors but you can see the ones across the road. We could hear the roar of the ocean but it lulled us to sleep. There are trails to the sandy beach.
We paid $21 for a tent site during the off season.