Just back from our one week cruise with Orchestra, and we are a little disappointed I must say. This is my second trip with MSC Cruises, and we have been with Costa Cruises and RC before. My English is not perfect, so I will focus on the "bad" things. Read the over reviews for the good stuff. :-)
The ship have been refitted with extra bunk beds in all inside cabins, and can now accommodate 3200 passengers. Public areas have not been updated to fit so many people, and the buffet area was a nightmare! Same goes for the restaurants to some extend. Tables are very close and two person tables does almost not exist on the ship. Waiters a very busy and look stressed. Again I don't think the Restaurants was build for this many people, or simply badly designed.
Our cabin was on deck 11, and at full speed you could feel the ship shaking. It was so much that I believe there is something wrong as my 2009 trip with Poesia (sister ship) was nothing like that. I have sailed with cruiseferrys from 1980's that was shaking less. In the aft lounge you could see and hear the ceiling shaking as well.