Some come to Las Vegas to get rich quick and others come to get hitched quick. It happens once every five minutes. Celebrities, including Frank Sinatra, Joan Collins, Paul Newman, Elvis, Cary Grant, Elizabeth Taylor, Angelina Jolie and Britney Spears all took vows in Sin City. Getting married is as simple as playing the slot machines. There are no blood tests or waiting periods, making Las Vegas ideal for couples who want to elope. In …