I think the biggest rookie mistake we made was thinking we'd be one and done with Las Vegas. We went with some friends who were Vegas veterans so I'm sure they saved us from making a bunch of dumb mistakes. I did have some very wrong preconceived ideas though. I remember asking where all the wedding chapels were. In my mind The Strip was laid out with a casino followed by a wedding chapel followed by another casino then a another wedding chapel and so on. I didn't do nearly any of the research that I do now when I go to a new place.