It looks like it's Halloween. The bartenders are in costumes, one of the women sitting at the bar is wearing a decoration of some sort on her forehead. And that very tall woman standing at the far right looks to actually be a man dressed as a woman. Edit: I just noticed the jack o lantern decoration. And the woman at the bar seems to be dressed as a flapper. And guy at the end, closes to us, is dressed as Al Capone.