When Ray and Robert discuss dinner party plans, the cap from Ray's ginger ale moves around on the table without being touched.
When Ray, Debra, Frank and Marie are returning from the "anniversary brunch", it is apparent that the front of Frank and Marie's house in this scene does not match the house shown in the scene opener. One has a black front door and other one has a white storm door, among other things. Also, in this scene the garage is on the right side of the house, but is always depicted as being on the left side of the house.
When Robert tries to give the toast, his notebook goes from wide open to about three-quarters closed between shots.