Matt - you are a good friend to pick up the balance for your friends. Good luck, and let us know how it turns out. I think Bill A is correct, Carnival would probably be willing to work with you but you may have to climb the ranks a little bit.
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