I would call AmEx customer service and discuss the situation with them.
Our situation was a little different. My wife had purchased a ring that needed to be sized and didn't get delivered to the ship as promised. We never had possession of the item.
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
Celebrity: Summit 2011
Princess: Ruby 2010, Caribbean 2013