In the film, there is a ship; everyone said it came from Argentina, South America. But the sailors and men there spoke in an obvious Mexican accent instead of the strong Argentinian accent.
I guess the American viewers don't care about this slip-up, but the Latin-American viewers do.
Yeah, helloo!! It happens all the time when it comes to anything Hispanic!!! For example if they ever go to Spain (in a movie or a series), for instance the hotel looks always totally Mexican and so does the cleaning lady that has a strong Mexican accent!! I live in Spain, speak Spanish and can totally tell the difference!