During a wild vacation in Las Vegas, career woman Joy McNally and playboy Jack Fuller come to the sober realization that they have married each other after a night of drunken abandon. They are then compelled, for legal reasons, to live life as a couple for a limited period of time. At stake is a large amount of money.
You can now watch What Happens in Vegas online on the following streaming providers in the United States.
| Directing | Tom Vaughan | Director |
| Production | Dean Georgaris | Producer |
| Production | Avy Kaufman | Casting |
| Production | Joseph M. Caracciolo Jr. | Executive Producer |
| Editing | Matthew Friedman | Editor |
| Sound | Christophe Beck | Original Music Composer |
| Writing | Dana Fox | Screenplay |
| Camera | Matthew F. Leonetti | Director of Photography |
| Production | Michael Aguilar | Producer |
| Production | Shawn Levy | Producer |
| Crew | Amy Cohn | Unit Publicist |
| Production | Barbara McNamara | Casting |
| Directing | Justin Ritson | Second Second Assistant Director |
| Art | Susan Bode Tyson | Set Decoration |
| Crew | Steve Barnett | Post Production Supervisor |
| Art | Stuart Wurtzel | Production Design |
| Production | Tom McNulty | Production Executive |
| Production | Arnon Milchan | Executive Producer |
| Art | Jennifer Alex Nickason | Set Decoration |
| Production | Jimmy Miller | Producer |
| Production | Judy Richter | Production Supervisor |
| Directing | Eddie Micallef | Second Assistant Director |
| Directing | Joseph Aspromonti | Additional Second Assistant Director |
| Costume & Make-Up | Renee Ehrlich Kalfus | Costume Design |
| Directing | Glen Trotiner | First Assistant Director |
| Art | W. Steven Graham | Art Direction |
| Directing | Rose Heeter | Assistant Director |
| Production | John A. Machione | Unit Production Manager |
| Production | Joshua Lucido | Trainee Production Coordinator |
| Production | Joseph M. Caracciolo Jr. | Unit Production Manager |
| Crew | Kimberly Shannon Murphy | Stunt Double |
| Crew | John Stifanich | Special Effects Coordinator |
| Crew | Harry Corrigan | Stunts |
| Crew | Blaise Corrigan | Stunt Coordinator |
| Crew | Jennifer Badger | Stunt Double |
| Crew | Kevin Patrick Burke | Stunt Double |
| Crew | William Cote | Stunts |
| Crew | Drew Leary | Stunts |
| Crew | Geoffrey Dowell | Stunts |
| Crew | Ian Mclaughlin | Stunt Double |
| Crew | Samantha MacIvor | Stunts |
| Crew | Victor Paguia | Stunts |
| Crew | Kimmy Suzuki | Stunt Double |
| Crew | Anthony Vincent | Stunt Double |
| Crew | John Cenatiempo | Stunts |
