At 6:35, George brings home a new, wrapped bottle of champagne. At 8:12, he grabs it and takes it to the table, still unopened. Florence picks it up at 8:41, we see her taking the wrapping off and we get a partial view of the white cork. Then, magically, without any effort (we don't see her pop the cork or noise of the cork popping), at 8:47, she's seen pouring the champagne.
Right after handing Louise and Ben their coffees, Florence scoots Louise over on the couch. Louise flings her mug all over the place, but no coffee spills out, revealing that the mug was empty.
Near the beginning of the episode, while Ben is on the sofa talking with Louise and Florence, you can see the shadow of a crew member moving around in the corridor behind Ben.
George asks the waiter for a scotch on the rocks (with ice), but when he brings it to him it is "neat" (w/o ice).