Spent two nights here in April. We had made reservations, but on arriving found we were in a loop with many many small kids - we told local ranger and he directed us to reservation center where folks told us just to cruise around and find a spot more to our liking, which we did. Finally found a more secluded spot where we spent two delightful nights. Lots to do here - we hiked to the beach to view an old shipwreck and also drove to Fort Stevens and viewed extremely interesting military base - been here over 100 years!
I recommend this State Park - but be prepared for lots of kids on bikes and skateboards.