The walls between rooms aren't all that thin. If there is no connecting door, you won't hear noises from the next cabin if the occupants are being reasonably considerate. You will hear noise from the hallway traffic, how much depends on the amount of traffic. We stayed on the Fantasy, deck 9, port side as far forward as passengers are allowed to go. It was an ocean view but did not have a veranda. The room was very quiet. Had we been in the same area but on the starboard side, we would have to deal with noise from the laundry machines. If you can avoid being immediately below restaurants and clubs it will certainly help. As was said above, too close to the elevators means more traffic, so more noise. We did have an odd issue with hangers banging together, I just hung a towel over all the unused hangers and the problem was solved.