Since you seem to be tracking the Italian maritime pres. Are there concerns about the quality of work being done at the shipyard? That seems to be a common denominator for Carnival Magic, Splendor, Sunshine and Royal Princess.
I seem to remember that after the Splendor fire there were items flagged like documentation, labeling and implementation that didn't align.
A Bad Day At Sea [with power] Always Beats A Good Day At Work
Carnival: Glory 2004, Destiny 2008, Splendor 2009, Freedom 2011, Valor 2012, Dream 2013
Celebrity: Summit 2011
Princess: Ruby 2010, 2014, Caribbean 2013, Coral 2014