The Quarry Cinema is one of the most popular theaters in San Antonio, and for good reason. Its location, in the midst of so many stores and restaurants, makes it a great place to go for dinner and a movie, or just to hang out on a Saturday afternoon.
The theater itself is pretty well maintained. Each of its 14 screens has a decent sound system (unfortunately, the sound is often too loud on many releases - I think that's a common problem with most theaters) and is kept pretty clean by the staff.
The concessions are pretty expensive, but that's to be expected of your typical movie theater. Since I don't usually buy popcorn or candy when I'm there, it's not really an issue for me, but I imagine it might be for a family trying to plan a trip to the movies.
Another problem is that before you get to a single trailer, you have to sit through about half an hour of unrelated commercial content, including "The Twenty", a 20-minute commercial for whatever TV shows or DVDs are about to be released. It's pretty shallow and adds nothing to the moviegoing experience. But it's possible to time your trips to avoid most of that. And once it's over, you do get to enjoy your movie with only the rarest of glitches.
I'll recommend the Quarry because it offers a solid moviegoing experience, and with a trip to Borders or any of the restaurants nearby, it's a great place to go when you want to go out.