Big Winner, The Gomorrah

 is a free quest in Fallout: New Vegas.

Quick walkthrough
Take the Gomorrah for all you can without being banned. Play Blackjack, the Slots or the Roulette table and wait for the floor manager to come by when your Luck stays.

That moment arrives when the player has won 9000 chips. The Omertas then become a little agitated and ask the player to leave.