Continuity mistake: The movie is supposed to have been filmed and taken place exclusively in Pasadena, TX, and MOST of it is. The trailer park that they live in, however, is NOT in Pasadena, or anywhere near there. There are several scenes where they show someone driving into the trailer park, and you can see mountains in the background. There aren't any mountains within hundreds of miles of Pasadena.
Continuity mistake: When Bud and Sissy are driving to their new home, the camera shows their names on small license plates in the rear window of the truck. They arrive at the house, and you can see a bunch of people and streamers in the back of the truck. They were not there when the license plates were shown.