The Wolf Pack is most definitely coming back in The Hangover Part III, with production slated to begin in September. The comedy sequel will reportedly be shot in Los Angeles, Las Vegas, and the Mexican tourist locale, Tijiuana. Here's what an anonymous source revealed about the shooting locations.
"A lot of it will be shot in Los Angeles, but then they are going to do the crazy scenes in Las Vegas again and then one wild week in Tijuana."
Another report revealed that the Las Vegas scenes will be filmed on and off the Vegas strip, and in Caesar's Palace. Story details haven't been confirmed yet, but the plot will allegedly revolve around Stu (Ed Helms) and Phil (Bradley Cooper) breaking Alan (Zach Galifianakis) out of a mental institution.