If the weather turns bad you may find yourself flying home at your own expense.
I asked the same question a while ago. You tender at Cabo so if the seas come up the port call might be cancelled. I don't know how often this happens.
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