The sound of the second shot at Bond sheltered behind the column (third shot overall) is markedly delayed apparently due to the prop gun being fired too slowly. The other ones are not very well in sync either.
Camera shadow is visible several times in the final scene.
Shadow of the boom mic is visible on the wall behind James Bond as he's explaining the rules of Baccarat to Leiter.
As Bond walks Valerie to the elevator, the shadow of the boom mic is visible at the top of the screen.