You are being charged full price for the kids because you are two in a cabin. The kids would probably be bargain price if they were in the same room with you. It might be too late, but what you really need , in the opinion of this old guy, is a completely different cruise and ship. A standard room on most Carnival ships would have more than enough room for the kids on a pull out sofa bed, as would many other ships. Elaborate a bit on how /why you got stuck with this two room thing.