If you go into this movie with no expectations around adaptation, it's an alright horror movie. Reasonably light and reasonably forgettable. Like the kind of King movie I would watched in the 80s. Silver Bullet for example.
My criticisms are - 1) not a terrible amount of build up to scares or suspense. It was a bit scary, a bit suspenseful, but that's it. 2) Lewis Pullman I guess is the up and coming son of Bill and again he was fine, but not particularly outstanding or charismatic. And it seemed like he was supposed to be a heartthrob type but I don't see it. 3) The movie moves along but somehow doesn't really develop any depth.
Overall, not terrible, just not special.