This is the first time Cliff wears the US Postal uniform. Prior to this, he wore the same uniform but with a different logo.
Cheers has a happy hour in this episode as these events take place two years before Massachusetts passed a law banning the practice. Rebecca will mention this law in a later episode when someone suggests a happy hour to boost business.
The result of the Red Sox-Yankees game is entirely fictional. The video footage was taken from a game on June 8, 1982, in which the Red Sox actually beat the Yankees 4-3 in extra innings at Fenway Park. The audio (Jon Miller's play-by-play call) is not from the same game.
Carla mentions she grew up on Federal Hill. The Federal Hill neighborhood is located in Providence, Rhode Island. This part of Providence is best known for its Italian American community
Fred says that his brother has so many things plugged into him that "he could get the Superstation." This is a reference to Ted Turner's WTBS Atlanta-based television station that had broadcast towers so powerful it could be picked up in other states. This would evolve into the first privately owned cable TV network.