Not bad for a megaplex in the northwest part of the Valley. I took my nephew to go see "Ice Age 3: Dawn of the Dinosaurs". He liked it. UltraStar theatres do cater to children (especially on Saturday mornings).
The lobby is decent, with concessions, indoor ticket booth (because it's Arizona), little arcade, and a movie seat sample area that shows trailers for the new Harry Potter movie. The stadium seating reminds me of the AMC theatres, but what do you expect from an new theatre? Also, the bathrooms have the new Dyson hand dryers.
I've heard people complain about the snacks. Advice...go to
-the nearby Country Kitchen
-the Safeway shopping center across Waddell (with the McDonalds and Taco Bell).
-the Fry's nearby (with a Sonic).