I have to keep coming back to this shot. The others have already mentioned much of how I feel about this and I was thinking that there is no need for me to repeat what has already been said.
I think this is so strong because it gives us stories in all the little hints it contains as well as the unusual pose of the main character.
I want to know how all these folks came to be here as they are - the group of three at the right hand table and what they are discussing - what's that lone women reading? is she usually by herself? - how that man was sitting there since before the rain started and what's he waiting for and thinking while he waits. I'd like to see this scene at other times during that day and other days.
...maybe I need to read some Wilder.