The Zuni Loop was the only area open when we were there. We tent camped. 

Positives: showers were open, lots of deer, night sky, so close to the interior of the Park, bear boxes, flushing toilets and running water in bathroom sinks. 

Negatives: smallest campsites I've ever seen > made it challenging to set up. We were told all toilets (3) in that loop were open, but they actually were not (the one closest to us was still locked until the 2nd or 3rd night). Not much privacy as the sites pretty much sat right on the road. 

Conclusion: would not return. Would much rather stay in the state park near Mancos which had HUGE shaded sites.