The movies are similar to what you might see on an airplane. Not first-run but maybe not in DVD yet. I'm pretty sure they were all PG-13 or lower in rating. Obviously they can not control who wanders onto the Lido deck while playing movies.
To us, most of the movies in February were not so interesting. The only one I remember was Oceans.
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, Regal 2014
Star Clippers: Royal Clipper 2015