Queen Mary 2's dance floor in the Queens Room is the largest dance floor at sea.
The Queens Room dance floor is approximately 117 metres squared (length 13m X width 9m)
On Queen Victoria and Queen Elizabeth the dance floors are:
The Queens Room is approximately 93 metres squared (length 12.88m x width 7.23m)
Hemispheres / The Yacht Club is approximately 35 metres squared (length 6.4m x width 5.48m)
Queen Anne's dance floor in the Queens Room is approximately 115 square metres (length 9.7m X width 12.8m).