Listen for rattles or other noises from the air conditioner or speaker chains or lamps
There is nothing more aggravating than watching a film that has rattles – irritating enough to notice, but only during the most exciting parts of the movie. When reported, they don't seem to get fixed.
So, please pay special attention to this and make the notes required to get it fixed.
This reminds me that we should create a 'ping' system so that these things get followed-up on.