Trivia - The actual line was "In Dallas", not Vegas. The movie was completed but not yet released when JFK was assassinated and Kubrik dubbed over "Vegas". If you watch Slim's mouth you can see it.
I agree, that scene with the reading of the checklist is one of the great moments in movies. The looks on the crew's faces as they unpack and inventory is priceless.
Yea I had heard about the city change but forgot over time. It is a great scene.