Factual error: In the beginning of the episode "Show and Tell", you can see Woody clipping his toenails on the bed. You can see how many toes he has one of his feet. He has 5 toes. Yet, in one of the first episodes, Woody states he has 8 toes on one foot and 3 on the other.
Factual error: Zack and Cody are often seen on their cell phones, however being out at sea they would not have reception.
Chosen answer: One: Zack doesn't meet Maya until after the movie. Two: There are 2 possibilities. The first one, the steps might worn off after they got to the ship. and the second answer, London said she talks to animals since she ate them, it never worn off.
Zack definitely met Maya before the movie takes place, SPOILER in the final episode when they break up Zack says they've been together for 3 months, and not only does the movie take place during spring break which is less than 3 months from normal graduation, but also their graduation date gets moved up since the ship got sold.
The movie is set between the last two episodes; they had already met.