I had a great experience as a first-timer at the Cannery Luxury Theater on Christmas Eve. I saw Into The Woods, and the theatre was packed! Luckily, I was still able to relax in the extra chair space and really enjoy the movie.
I also love the F'real milkshake machine at the concession counter...I have to get one each time I see a movie here.
The Cannery isn't in the most beautiful part of Vegas, but I drive 20 minutes to catch a movie and gamble here.