I don't think there is a mini fridge or bar in that cabin. There may be a fridge, but if there is it will be fully stocked and the movement of anything may lead to you being charged for the item. This goes for the cabins that DO have a mini fridge also. There will be an ice bucket and glasses however.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise, Magic 1/14
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013