Are there bathrooms and are they open?

Yes and yes

Trailside Museum has bathrooms pretty much on every floor, and very clean. But I haven't been to the Loop Playground or any of the trails if that's what your asking about. Hope I helped ya! ☺️

Yes, loop playground, 1st floor ofthe old church by the deserted village and a Porta potty by the huge Pavillion

They were open a few weeks ago.

There are bathrooms in the circle, and I think in the science center.

Yes they are