My wife and I went out to see it last night ... one of the few movies I have ever gone to where the audience applauded. For the budget they had, they did an excellent job. The movie follows the book remarably well ... and that is probably the biggest problem that it has ... if you have not read the book, you may not “catch” some of the subtle clues shown in the movie, such as the cigarettes.
We live in the Seattle area, and for a Tuesday 7PM show, it still had about 40 people in the theatre. Not earth shattering, but I have been in “bigger” films on bigger days of the week with fewer people.
I read the book thirty years ago, and will read it again. Try “we the living”, it’s a tough book to read but well worth it.