This movie theatre is mediocre in every aspect. Nothing about this theatre makes it one of the best places in town to catch a movie, but it is certainly not the worst place either.
From the seats to the concession stand, Colonnade does most things correctly, but doesn't go above and beyond. This is one of the older movie theatres in Henderson, so don't expect all the bells and whistles like that of the Galaxy. The screens are nice and showings typically don't fill up as much as other places, so there is usually space to spread out.
The best part about Colonnade is that they are one of the few locations around Las Vegas that participate in the Regal Value Days program, making movies only $6 on Tuesdays. The worst part about the Colonnade is the movies they show. I have found on multiple occasions that a new movie will be showing at almost every theatre in town except Colonnade.
All in all, this is a nice Henderson spot to watch a movie. Just don't expect to be wowed by your surroundings.