Does the reader recognize grandmother or great grandmother?

We can guess that these revelers did not come paired since they are not sitting as couples would. Note the man and woman in the back right corner. We will see more of them later.

A dance floor is essential but limits the downstairs seating. The  balcony allows for a larger crowd and provides a more intimate setting than the downstairs booth.

John Wujs and his friend demonstrate the utility of the balcony.

We saw them in the first picture sitting with the group. John cut her from the herd and now they are upstairs tending to some serious business

Considering the dancers' moves, the music must be "Stella By Starlight."

The couples on the right are dancing the all time favorite step: cheek to cheek in a dark corner.

A live band is an essential part of the weekend scene. The juke box is used in the smaller clubs.

Some of the band members look young enough to be school age. When the kid musician developed skills and reputation, he found plenty of work.