Does nro campground have campfire rings at each site? Do they have showers?

The cabins do,the campground does not, and yes they have campfire ring

The campground has a ring of large stones for the fire. They do have showers.

Some of the camp sites do have "rings/rock circles". And yes they do have showers.

They have public showers. Unable to say where exactly they are, best to ask when you get there.

Yes and yes