The north campground is amazing, just a short distance from rim. We were there in early April, only Loop A was open. Most of the sites are huge, but they have enough so there's a chance you'll get one that will fit in. The Restrooms are clean, but they have no showers. Amazing views, nice and quiet. There's a camp store thats a short walk away and is well equipped. It's not far from town so if you need other things it's an easy trip.