Before I moved to NYC I didnt know anything about Shake Shack except what I had heard from overzealous tourist. I didnt actually try it until they opened the one on the UES, around the corner from where I used to live, back in August of last year. Life changing. My skepticism kept me from a delicious burger and fries and shakes for a long time and so I have made it my mission to try burgers at each of the locations, including the one on South Beach. The bathrooms are pretty high tech, featuring an airblade style hand dryer and fancy floating toilet. There are several single stalls, and often there is a line, so I think they should have splurged on a couple more or maybe a row of stalls, mens and womens. I give this Shake Shack’s bathrooms 3 flushes.