I watched it this week. It is an alright movie, nothing really great. The acting isn't the best- there were a couple of times when I thought the Mom was going to start laughing in the middle of a scene. The kid from The Walking Dead is in it. He did alright- he's a lot scarier to me in TWD.
I kinda liked it, but it just feels very short (which means at least I wanted more, so it can't be too bad). What I was hoping for was that it started with events that were not in the story and that the last part of the film (the climax) would BE (close to) the story. That's not really how it is though; it's more like they took the basic idea and made it quite different.
I still bought the dvd, because the story is one of my alltime favourites from King. There is a really nice atmosphere to the locations used in the film, but apart from that it's nothing all that special.