FAQ for
What Happens in Vegas (2008) More at IMDb Pro »

The following FAQ entries may contain spoilers. Only the biggest ones (if any) will be covered with spoiler tags. Spoiler tags are used sparingly in order to make the page more readable.

For detailed information about the amounts and types of (a) sex and nudity, (b) violence and gore, (c) profanity, (d) alcohol, drugs, and smoking, and (e) frightening and intense scenes in this movie, consult the IMDbs Parents Guide for this movie. The Parents Guide for What Happens in Vegas can be found at http://www.imdb.com/title/tt1033643/parentalguide.

No. What Happens in Vegas is based on a script by screenwriter Dana Fox.

Grace Kelly - Mika

Jungle Rock - Scott P. Schreer and Tamara Loeffler

Steady - Dukes of Daville

Pink Flamingo - Jo Part

Can I Get Get Get - Junior Senior

Licht Senkt Es Sich Von Himmel Nieder From - Bruckner Orchestra Linz

If You Love Me - Buzz Junkies

Im Alive - JG

Freek U - Bon Garcon

Bud & Mary - Simon Brint and Simon Wallace

We Are The Champions - Freddie Mercury

You Sexy Thing - Hot Chocolate

Love - Matt White

I Want A New Drug - Greenskeepers

Never Let You Go - Smoothie Steven Simon

She Talks Too Much - C.M.D.

Raise A Little Hell - Mike James and Troy Samson

Hustle Man - Tyrant the Don

Commit Me - Arlaner

Hit Me With Your Best Shot - Eddie Schwartz

Are You Gonna Be My Girl - Jet

Guys Named Dick - Geoffrey Keezer

Hey Man (Now Youre Really Living) - Eels

An Affair To Remember - Harold Adamson, Leo McCarey and Harry Warren

One Love - Ian Dury

Circles - Terry Devine - King

Love Is A Many Splendored Thing - Sammy Fain and Paul Webster

Get Down On It - Ronald Bell, James Taylor, Robert Bell, George Brown, Claydes Smith, Robert Mickens and Eumir Deodato

FlashdanceWhat A Feeling - Irene Cara, Giorgio Moroder and Keith Forsey

It's Alright - Asa Semple

Tonight I Have To Leave It - Shout Out Louds

Put A Record On - Unkle Bob

Im Not Over - Carolina Liar

Save The Best For Last - Vanessa Williams

I Hate You (My Friend) - John Oszajca

Source: http://answers.yahoo.com/question/index?qid=20080509204354AAF4ScZ

It is RUMORED that they were actually intoxicated in order to make the scene look realistic, and their erratic behavior caused the scene to be filmed multiple times.

Before the end credits roll, but after the movie officially ends, there's a scene showing what really happened when Jack and Joy got married intoxicated in Vegas. About a further 20 seconds down into the credits, there's another scene where Tipper carries out her revenge plan on Mason by going round to his flat and punching him in the nuts. Finally, there is one last scene after all the credits have rolled that sees Dave waiting for Jack to bring his car back and asking a passer by if he "likes to party?"