A great cruise and a fine ship. Don't think anyone will be disappointed with the itinerary, ship, food, or service. For us the northern part of the cruise offered spectacular never before seen scenery.
No problems with noise or vibration on the ship from us, although we did have breakfast with a family that has an inside cabin that said they had a consistent noise that keep them up all night. The first few days of the cruise we did feel some vibration in the dining room second floor but it was not too bad, it then went complete away for the remaining 5 days.
This was my first time cruising with Royal Caribbean and so I thought some might find a comparison between Royal Caribbean and Carnival useful.