SO after a week, everyone is pretty much saying the same thing. Good not great, too much CGI that was subpar, good performances by the kids and Pennywise, not really scary.
I think we won't be able to really judge until Part 2. I will say that the director already fukked up by not filming both parts together, so I hope they have enough scenes to incorporate already. I've been informed that filming starts this week, and I responded they haven't even announced the adults yet. But you figure, they can't wait too long with child actors, so prob working on their scenes first.