It's not a lot of walking, just 3 rooms. Seating is limited but you can sit on the floor in your circle. I did see people in wheelchairs but I don't know if they were provided by the exhibit.
There are three rooms but the same thing is happening in each room. You get a different perspective from the different rooms and balcony so you can definitely see it and experience it from just one level, one room. There is a ramp going up to the first room. Im not sure who provides the wheelchairs however.
There were stairs to the balcony. Once inside you don't walk around. Not sure about the wheelchairs.
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