The first time we sailed was in the spring of 2006. All was fine till dinner time our first night on board. Dinner was in Animator's palate, with no windows. There was a beautiful meal sitting on the table in front of me, when very slowly nausea creeped up on me. The server got me some crackers, can't say they really helped, but the nausea was gone by bed time and never came back.
We sail again for the second time this coming fall, and I'm hoping I'm sure the nausea either wont' happen, or will be just as mild as it was the first time.