Ass Pull: So a man on the street that they were gambling against just so happened to have a map leading to El Dorado as the Spanish fleet were going to South America AND just so happened to land right where El Dorado was?
That man was a member of the crew looking for El Dorado, they likey all had a copy of the map which is why you see them following the same trail that our heroes took.
And let's not forget the homage of the Road To movies. You know, those old black and white Bob Hope and Bing Crosby films that most children had never heard of before and are very likely to be bored by if they do see them? Perfect!
Awesome Art: You will weep for the death of DreamWorks' traditional animation department by this film's end.
Die for Our Ship: There used to be a site just for Chel haters. They don't give any reasons why they hate her, but this trope is the most likely reason.
Many people on fanart and fanfic sites DO give this reason for hating her. That, and that she's a "slut". That she could merely be teasing the two guys with her sexual charms never crosses their mind. It reach some rather hypocritical levels since Chel is not shown to be anymore a hustler/Con-woman than Miguel and Tulio are but it's her actions that get the scorn.
Which is outright "Hysterical In Hindsight" when you remember that they were originally written as an openly gay couple.
Others have also jokingly compared to Thor and Loki. Which means they are gods. Especially funny since Miguel directed the first movie.
Ho Yay: Dear God! The relationship between Tulio and Miguel drips with this. From their naked bathing together and Miguel's jealousy at Tulio and Chel. Indeed, the film works best if you go through it under the assumption that the two are repressed (or even not so repressed) homosexuals.
They were originally going to be lovers. A trace of this can still be seen in the original subtitles, which have them refer to each other in romantic endearments, though whereas they were reintended to be sarcastic is unknown.
There are quite a few scenes where you see them acting rather...intimately with each other for just a second. And the endearing looks that pop up more often than not are a dead give-away, too.
To be more specific: It's obvious after the ball game, where Tulio and Chel are standing very close to each other, being pretty touchy feely. Not a second later (after the "camera angle" changes) Tulio has his hand on Miguel's chest and Chel is standing about three feet away. The animators apparently really wanted to keep the original relationship in the movie somehow.
Also, after they lose each other during "The Trail We Blaze", Tulio and Miguel put their hands where? Hips and shoulder, respectively. Very...coupley...
Gifs of Miguel's intense lute playing during the gambling scene are quite popular on Tumblr.
One True Threesome: For those that like the Miguel/Tulio paring but don't hate Chel. It helps that both Tulio and Miguel go slack jawed when around her, or that Chel flirts with both about equally, and of course there is Miguel and Tulio's relationship.
The movie has shown up on a couple of online lists of "Movies That Should Have Ended In A Ménage à Trois."
What Do You Mean, It's Not for Kids?: It's not an adult movie, but it's certainly no kiddy film either. Which badly hurt marketing and ticket sales, leading to disappointing revenue - the campaign was aimed for kids below ten and no-one else.