To get to the dressing rooms, you have to go down a flight of stairs to the basement.
There is no designated area and there is nowhere for a space to be created.
Unsure if there are normal chairs available for fans who request them. There are benches/couches along the walls of the main room where the stage is, and there are barstools in the front bar.
Their website also says: "Handicapped seating is available. Arrive 15 minutes before doors open."
The restrooms are very small and tight and not disabled friendly.