Yes, if you watch the prices on Carnival's website and the price on your cabin goes down just call your PVP and ask for the new price. They should keep up with prices and do this automatically, but I wouldn't count on it !
I know it's absolutely none of my business, but why did you pay in full already? That $$ could have been in an account making $$ for you instead of Carnival!
"A truly happy person is one who can enjoy the scenery on a detour."
Golden Princess 2009 Carnival Conquest 2010
Grand Princess 2010 Island Princess 2011
Grand Princess 2011 Carnival Magic 2012
Carnival Dream 2012 Island Princess 2013
Carnival Magic 2013 Carnival Legend 2014
Carnival Magic 2015 Coral Princess 2015