Originally posted by 1Sgt:
I think you need to go up the chain of Carnival Command!
There has got to be A A space available. Heck, they could even try reconfiguring people in certain cabins in order to fit you as a third person in your family's cabin. Call them back and speak to supervisors--go as high as you can.
I'm with 1Sgt, there has got to be a way that they can reconfigure things. Keep calling and good luck!