Well, I had never seen Noises Off before and the first act did not land with me much at all, and I only occasionally laughed up until the third act. Not sure why I wasn't taken in, since I like British farce a lot. I just didn't get enough of the archetypal energy from each player that drives a farce forward. In particular, Campbell Scott underwhelmed me in what he brought to the director role and his initial interactions with Dotty. I will agree that Megan Hilty was enjoyable throughout, and there's some physical comedy in act 3 that finally hits its stride.
I heard quite a bit of anticipatory laughter in the audience, and it was apparent a good portion of the audience knew the play well. In my little island of the audience, there wasn't much laughter until the final mayhem, and the two women sitting next to me spent intermission looking up reviews of other versions of the play. A polite ovation at the end with some scattered people standing. So, I'm not sure how it's playing with the hoi polloi. It definitely picks up after intermission, and I'm glad I stayed, but unfortunately, it wasn't the experience i was hoping it would be.