On our recent cruise we deviated because of Hurricane Rick (Pacific). We went to Ensenada instead of Mazatlan. We also arrived in Puerto Vallerta a day later than scheduled. Okay Ensenada was a little ho-hum, but had we kept our original itinerary we would have been sailing in some very nasty weather and set on board the ship in a driving rain while we "enjoyed" our port day in PV. As it was we had a day of "choppy" water and a beautiful day in each port.
A Bad Day At Sea [with power] Always Beats A Good Day At Work
Alaska 2014 - haven't picked a cruise yet
Carnival: Glory 2004, Destiny 2008, Splendor 2009, Freedom 2011, Valor 2012, Dream 2013
Celebrity: Summit 2011
Princess: Ruby 2010, Caribbean 2013