Was on a 3 day trip to Vegas with my 11 yo son. Had to see "Dawn of the Planet of the Apes" on opening night. So we took a cab from Mandalay Bay ($28!). This place is quite a distance from the strip but worth it if you take your movie going experience seriously as I do. We're from LA and stick to Arclight exclusively because of their no-commercials policy. I hate commercials at a movie theater.
The staff was very nice and helpful. I love that they threaten to kick you out of the theater if you use your mobile during the show. The recliners were nice and clean. The ticket prices were very reasonable compared to the iPic in LA which is $30 a seat for a very similar experience.
My only complaint was that they kept the house lights on during the trailers which made it very hard to see.
If you're in Vegas and want a top notch movie experience, check this place out.