Yes is open. Sorry I don't remember about restroom at the other little entrances. But there is one on the main entrance.
This is one of the places that are perfect to visit during the pandemic. Outdoors, not crowded, no reason to interact with people (and it's not crowded).
John beat me too it. Its a big place mostly driving or biking. There are trails too.
Refuge is open and beautiful. There are a few porta-potties. So, go, and enjoy and leave your mask at home!
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