Plot hole: Toward the end of the episode, when the spliced-together movie is shown, there are several scenes from the movie Lucy, Fred and Ethel shot, often showing all three of them on screen at the same time. The problem is that no one else was there with them, yet the camera follows them as they move around the room. Who was running their camera?
Plot hole: Both couples have the same group of friends and they were all invited to both going away parties planned on the same night at the same location. Isn't it likely that at least one of the main characters would have found out about the other party? But at the end, all seem surprised about the other party that was planned for them.