The space used to create the old fashion mens and womens rooms could create enough single use restrooms to serve public traffic with the right planning. Beaches have been doing this for years. Venice Beach is a zoo on weekends yet those single use restrooms work fine. They have long buildings with entire rows of them on each side.
I am seeing this in NYC Resturants as well.
Walk downstairs and right into a an open long area of doors to the left and wash up for all on right. Works perfectly, it seamed a bit strange to me at first but made perfect cense and not a problem for anyone.
