With younger children, 3 to 10 or so, Disney is the way to go. I think RCI is probably better with older kids.
I'ld Rather Be Cruisin'
Disney Magic February 4 2006
RCCL Freedom January 20 2008
Disney Wonder October 2009
RCCL Rhapsody of the Seas September 2011
Disney Magic February 2012
Disney Wonder January 2014
Disney Wonder to Hawaii 2015...I hope!