Red Rock is my favorite of all the Station Casinos that I have visited. If you're into ambience, then you may apppreciate the vibrant earth tones and subtle sophistication of the place, located near its spectacular namesake.
I like the buffet very much, good food for a good price expecially if you are a Stations member ($2 discount) or you have the LVA MRB (2-for-1). Their Grand Cafe is also reliably good, and I remember liking their Italian and Japanese restaurants.
I only play their video poker so I can't comment about the rest of the gambling, but they do have a decent inventory of PE video poker machines. They also seem to have a wide variety of the latest slot machines, and their table games are often hopping during a weekend or holiday night.
Hope you enjoy your visit if you make it out!