Sigh. The movie tried, it really tried, but there was just no working around the Stephen King-ness of that adult arc, I guess. There's a solid movie underneath all the extraneous detail, but the extraneous details do really kill the movie for me.
Probably the biggest blunder of the movie is that unlike the first one, none of the tension from one scene transitions really well into the next. There's no real build-up like the first one has, and the ending is... kind of silly, actually. There were some unintentionally funny moments throughout that especially ruined the mood.
There's potential here, they've just been 0 for 2 so far. The acting for some characters was pretty inspired, though. Lots of people are heaping praise on Bill Hader, and he definitely puts in one of the better efforts this movie.