At the start of the brawl with the Muleteers, Aldonza goes from standing right next to Pedro to far behind him and back throughout the scene. She also appears to be moving toward him in two separate shots.
Both the film and stage performances of the play on which it's based depict the elderly Miguel de Cervantes y Saavedra as able to use both hands. The real Miguel de Cervantes y Saavedra had a paralyzed left hand from his wound in the Battle of Lepanto (1571) when he was a 20-something.
In the film, Miguel de Cervantes y Saavedra uses the story of Don Quixote to defend the hero's chivalric notions. In the final pages of the novel, and only in the final pages, he declares that his intention was to satirize and poke fun at the exaggerated books of chivalry which were then in vogue. Part I of "Don Quixote" published in 1605, is mostly comic; Part II, published in 1615, is more melancholy and psychological. Most critics feel that, despite his satirical intentions, Cervantes mellowed and began to admire Don Quixote between publication of the 2 parts.
Miguel (pronounced Mee-GELL) is mispronounced by various characters as "Mee-GWELL," including Peter O'Toole when introducing himself to the other prisoners.