We were in cabin 2592 on the Wonder this past March. Every single night we had horrible vibrations and loud noises from 11pm until 2am. It sounded like they were doing some kind of metal cutting/grinding work, also like bowling balls being dropped on our ceiling. We had stayed in this same area 2 yrs before and never heard these noises. I don't know what caused the sounds, but they started and stopped at the same time every night. Never happened any other times. You wouldn't think they would do repair work during the middle of the night, but that's what it sounded like.