I was in the Air Force when this came out. All of us guys forced to live in barracks were anxious to get out and go somewhere whenever we could. One destination was the movie theater on the Base -- I remember when "Viva Las Vegas" opened, and a bunch of us went to see it. There was one reason that we did, and only one: Ann-Margret! Except for her, it's another insipid Elvis film, but by the time the film is over, the writers have turned even her into another mindless creature chasing after Elvis the King. With the wholesale changes in Vegas over the past 60 years (not necessarily for the better), the film is now badly outdated.
Review of Viva Las Vegas
