Regal Cinemas is located in The Red Rock Hotel & Casino. It is next to the food court and near the bowling alley. The best spot to park is in the West Garage.
The theater is well maintained and always seems to be clean. There are always plenty of movies to choose from. I think they have about 16 theaters. They have IMAX movies and they have rooms in the theaters if you want to have birthday parties for the kids. The theaters always seem to be kept up very well and the staff is very friendly.
The only complaint I have is that sometimes they tell you that you can't bring your beverages from the food court in to the movie theater. It is purchased at the Red Rock, so what is the big deal?