The usual configuration is two singles which can be pushed together to make a queen and a convertible sofa. Roll-aways may be provided too, which sounds like something you need. I would get with my agent and verify the sleeping layout for your cabin, and if a rollaway was requested with the booking. Which cabin number is yours? You can see how the room is configured by going to the
Carnival Victory Deck Plans Page, finding your cabin and then looking at the legend for cabin layouts.