Everyone is right--there is a rule in place and one change per cabin only.
You also have an additional problem if you try to cancel ALL bookings. Your reason for cancelling would not be valid for the two cabins, but the third cabin would be. If you cancel ALL cabins you will lose most of your money and the insurance will NOT reimburse you because the medical problem was not you, your spouse, or child. The fine print of the insurance will tell you all.
Don't blame Carnival on the problem and a letter to the CEO will not make a difference to Policies that have been in place for years. The policy is drafted by the legal department and you could fight with them, until one of you is ready to retire, the policy will still be the same.
Imagine if the policy were changed and you could cancel both names, everyone would do it and they would have a administrative nightmare on their hands trying to keep up with the changes!!!
2007 Victory & Triumph
2008 Conquest & Liberty
2009 Valor, Freedom, and Splendor
2010 Glory and Liberty
I gotta go where it's warm.....
Over 40 victim of fate.....