It depends. Our cabin had hard steel bulkheads on both sides. No way to open it up without a torch.
SS Norway (12 times) '85 - '97; Radiance OS 06/01; Island Princess 11/04, Grand Princess 11/04/05, Golden Princess 7/21/06, Golden Princess 2/24/07, Explorer of the Seas 12/23/07, Island Princess 11/15/08
In 2005 we were on MOS and asked if they would open our balcony door becasue we had our good friends next door. Our cabin steward told us it couldnt be done becasue of safety issues. I kindly asked him why do they have the ability to open them then. I didnt get a response.
Mariner of the Seas 10/05
Navigator of the Seas 10/06
Monarch of the Seas 9/08
Carnival Spirit 10/11