Regal Cinemas are my fave here in Las Vegas. This location is always very clean, comfortable seats, and rarely is too busy. With their frequent visitor card you can earn points with each movie you see and get free movies and great discounts on popcorn and drinks(great for a regular movie-goer like myself!)
my only complaint is that at times when it is busy, they seem a bit understaffed. I have been there when there is 15-20 people in line and only 1 person selling tickets. but this is the exception and not the usual with this location.
All in all, almost always a great experience and will continue to enjoy seeing movies here!