I have stayed at a lot of COE sites in the past, this one is the only one I have been to where I couldn't find a site on the day of. Strangely enough this was a regular day and so it took me completely by surprise as these kind of parks are not usually this crowded except on holidays.
After referring to their site I noticed they really push the reservation system. It was very disappointing to me as I had come to the area.
I did enter for day use to check it out however and it was very nice which would make sense as to why it is also very popular. the picnic tables and grills at each site are improved from other sites and they have level parking which would make camping a dream. The waterfront is well maintained and easy to navigate, fish or swim from in certain areas. The site placement was well spaced and didn't feel crowded and the facilities were very nice overall.
You can tell the staff really works hard to maintain this facility and it shows. This easily could have become one of my more favorited COE sites had I have been able to stay, however with not being able to I cannot truly give a full opinion of the quality of nights sleep.