Mr. Escobar jokes that the class president contracted the Ebola virus. The first Ebola outbreak in America occurred 11 years after the release of this film.
When Lizzie is at the airport with her family, she has her pants rolled up at the bottom. When she runs away from them, they are no longer rolled (visible in full screen only).
When Paolo and Lizzie go to Franca's place to choose a dress, Lizzie tries on a dress that has a magazine cover for a hat. The magazine is the edition that Gordo has just seen the two girls reading with Lizzie on the cover. But when he shows Lizzie the magazine when she gets back to the hotel, she looks astounded that she is on the front cover of a magazine, but wouldn't she have already seen it (when she was at Franca's) before Gordo shows it to her?