Another consideration is that the cruise may sell out, as my next one in November did. Then you may be on the outside looking in. Book your best deal asap.
Explorer of the Seas October 2013
Caribbean Princess July 2006, May 2010 & November 2012
Monarch of the Seas November 2008
Crown Princess November 2007
Celebrity Zenith November 2005
Enchantment of the Seas August 2004