When Brother Love is talking to the assembled they are in folding chairs, but when Solo and Miss Johnson arrive, there are fixed folding seats as in an arena and a much smaller space.
Some of the extras appear at the start in the airport, then at the Brother Love mass, and again the last last airport shot, wearing the same clothes.
At the opening scene of a busy airport (where Kuryakin is waiting for Dr. Armendale) the caption says "New York City," but clearly visible in the background is the Washington Monument.
Solo uses his cigarette case to block the spy-cam in order to plot his escape. Brother Love sends one of his men down to check on Solo and presumably stop him from blocking the camera. He checks on Solo, but does nothing about the cigarette case.