We were on the same sailing as ChatKat and concer with everything she said. (Didn't meet one another until a few months ago via the boards - maybe sometime in the future.) Bill and I went on to Denali for three days post-cruise and the great weather continued. We were really blessed - great views of the majestic snow capped mountain.
Although I never needed it on that trip I now always travel with Bonine just in case rough seas are encounterd. It works the best for me with no side effects.
