I went to see this on Saturday.
I was definitely enjoying the movie, but right in the middle of the big fight scene at the end, the theater's fire alarm went off! They did not know what was going on, or if they were going to let us back in, so my wife and I left.
I'm not sure when I'll be able to get back into the theater, and it seems crazy to sit through the first 2 hours again just so that I can see the last 20 minutes. I imagine it will be out on DVD fairly quickly.