We were in 12512 in March and the only thing I hadn't seen mentioned prior to our cruise was a very loud thumping noise the first night. I'm a light sleeper and had earplugs + melatonin and it kept me up. I don't know if it was the verandah dividers or something above us but I wandered up to deck 13 around 4:00 am to try to figure it out - it was windy and rainy but there wasn't anything obvious making noise. We didn't hear the noise again so I think that perhaps it was a combination of the weather, the wind direction and maybe the speed of the ship. I loved being right across from the concierge lounge, very convenient.