Ex-KOA is fine.
We arrived late, they got us in, we left early. I paid more than I wanted but they’ve got a sweet deal with their proximity to the solidly booked national park. We arrived on July 5th, and the pool had just been shocked (good) so we couldn’t use it (bad), can’t speak to that.
We were in a VERY small site (as advertised) and folks were packed in stacked. When I enquired about the advertised (on their counter) late checkout, they didn’t have the availability to do that so I’m guessing you’ll want to book ahead.
Site10
Month of VisitJuly