I just finished the show and the keys are timing and pacing. You cannot just read through the show, and you certainly cannot read though it too fast. All actors and actresses should be on the same page. I personally loved being in the show, but after being in it, I may nit pick at the show, and I'm never like that with any other show that I have been a part of.
Broadway houses should REALLY look into getting this system. My FIRST ever broadway experience was almost ruined by a couple teenage girls. The show was spamalot and the jokes were usually ruined by the loud girls ruining the punchlines.