I am traveling Oct. 2007 on Royal Caribbean Adventures of the Sea on the D-1 balcony 10th deck Cabin 1690. I have a option to move to the 9th deck right by the elevators. I have never been on a cruise before and don't want to get sick. Will i feel a lot of movement in the back should i move to the 9th deck? If anyone can help i would appreciate it. Thanks alot!