For my first time seeing any production of Miss Saigon, I loved it. I was a little annoyed at all the close-ups and didn't like that it was trying to feel more like a movie than a stage production - I did enjoy being able to really see and make out all the facial expressions, but at the same time I kind of felt like I was missing out on something by not getting to see the whole picture, as well as not really getting how certain things were staged or segue'd. I feel I may have missed on some of the choreography too. Also the helicopter scene was a little underwhelming compared to what it had been hyped up to me to be. The Engineer was by far the highlight of the show for me, especially his final song, though I was a litte confused about its placement and the mood whiplash that caused bothered me a bit. Still, it was great, and especially the Gala version where he performed the song again with the original actor. That was surprisingly the only instance of americlapping I got in my screening.
As for sound complaints, my brother works in the movie theater I saw it at, and he mentioned a few people complained about it being too quiet during certain parts, but he claimed that any sound stuff was an issue with the copy they had or the film itself, and not with the theater
Overall a great night and a great show. Even with my minor quibbles, it was still an entertaining night, and I really hope they continue to do this with future musicals. I am all for making musicals more accessible in a legal, profitable way!