According to the original stand up act of the story, Bebe had four kids, Robin and the others went to Disneyland, and the second act involves Bebe's kids getting Robin to drive them to Las Vegas at gunpoint. In the movie there are three kids, the movie takes place in "Fun World" for legal friendly reasons, and Robin was just tricked into going to Las Vegas near the end of the movie.
Some versions of the film's theatrical trailer contain audio problems for the last few seconds, which actually cuts off the last couple words of the tagline that the announcer says. The original tagline is, "It's animation, with an attitude." However, the trailer with audio problems makes it seem like the announcer only says, "It's animation--"