Complete fan service (like Abrams’ The Force Awakens). As a huge Constant Reader (aka Stephen Kingnatics), I was very satisfied with this adaptation (I’ll discuss specifics in my spoiler-filled notes).
If you’re expecting the usual scares (similar to Muschietti’s Mama), you’ll probably end up disappointed. If you really liked Stand by Me (or even Stranger Things), expect the same kind of engaging storytelling and fun nostalgia. If you have coulrophobia, don’t even bother watching.
(Originally published September 7, 2017.)