I complained (3 times) to the service desk,with my complaints at first being dismissed, and later a suggestion that we use earplugs to muffle the noise (it would not have helped, anyways, as the whole stateroom was shaking and vibrating), and we do not appreciate going on vacation to have our sleep disturbed in such a fashion so as to be required to use earplugs.
Other than that, the trip was quite enjoyable, the food was amazing, the entertainment was fantastic and the stateroom stewards were great.