Based on the most recent Reception reports, it appears Carnival and many other lines continue to migrate to TRBO
However, the last info on the Freedom is from Pre-2014 and was limited in exact info, but they were Analog back then
Best bet, would be to put in the many other Carnival found frequencies and use tone search
As someone else posted in a related thread
"Search on the word 'Carnival' "
You might be interested in reading my two part article at
http://www.scannerdigest.com/files/SD-60-Newsletter.pdf
http://www.scannerdigest.com/files/SD-63-Newsletter.pdf
Send me a PVT Email, and I can point out the other ships you will likely encounter at each port.
I will traveling on the Carnival Freedom out of Galveston TX in Feb and I am looking the frequencies used on board the ship. Thanks for the help.