I do bring my steel water bottle, actually break it out and fill it once we go through the TSA check at the airport.
Our best photo from our last cruise was taken by a crew member, but it was a bartender not the ship photographer
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