When visiting Chile, the map shows several misspellings: Valparaiso is "Valpraiso" and the Juan Fernandez Islands are "Juan Ferndez Islands". On the postcard it says Vina del Mar instead of "Viña del Mar"
For a moment during the Baia sequence, Donald's face is green.
While performing magic to make himself larger, Donald is shown with 3 hands and 1 foot.
During the flying zarape ride, Panchito tells Donald and Joe about the town of Patzcuaro and its lake Janitzio. Actually the lake is also named Patzcuaro; Janitzio is the main island in the lake.
It is "Bahia" with a "h", the movie spells it as "Baia"