Cruises can be a bit claustrophobic if you happen to be in an interior room. The already small space is compounded by a lack of outside access, and despite efforts otherwise, can feel dim and confined at times. Royal Caribbean is addressing that issue in a unique way: with virtual balconies installed in interior rooms, which give everyone a view of the ocean and make the space feel a bit bigger. How are these virtual balconies achieved? Using giant 80-inch 4K displays mounted on the wall.