I saw it in San Jose this weekend. Twice! (Wish I could have done it more.) In spite of the caveats about showing it on a domed screen, I felt like I was in the movie. 3D may never cut the mustard for me again.
The joy of seeing honest to goodness film, and hearing a projector whirring somewhere in the darkness is something I will treasure for a long time.
The sound was absolutely superb. I heard things that were buried in the mix when I saw it last month. The sunken TIE fighter exploding made me jump even when I knew it was coming.
There was also a nice little documentary before the movie showing how the print is meticulously assembled from a multitude of three minute(!) reels.
And since somebody beat me to starting a thread, I guess I’ll post the pics I took at the theater (not of the screen) when I get the chance.