Tropes seen in this epi ... hey, Alvin ... Alvin ... AAAAALLLLLLVVVVVVIIIIINNNNNNN!!!!!!
Christmas Episode: Although it aired in late November 1983, the episode's plot has a Christmas theme (Alvin and his brothers helping a friend set up a holiday-themed attraction, unknowing that it's a setup by their con-artist uncle who plans to replace his nephews with robots).
Cut Lex Luthor a Check: Uncle Harry's plan of a holiday-themed attraction isn't really that bad of a idea if he handled things honestly. Unfortunately, by tricking the Chipmunks into getting involved by making them think that he's the real Santa, who needed the theme park (and robot versions of the Chipmunks in case they got sick) in order to ensure that Christmas doesn't get cancelled, it basically turns into an exploitation scheme.
Replacement Scrappies: In the end, the robotic versions of the Chipmunks are these after their genuine counterparts perform badly on purpose to expose the robots (and their creator) as frauds. An in-universe example.
