Don, on our world cruise the first 6 days were sea days cruising from Los Angeles to our first port, Nuku Hiva. I was concerned about the same things you are but I quickly learned it was great. It really gave us a chance to get to know each other (after all most of us were going to be spending the next 3 1/2 months together). We had very nice weather which helped as well.

Our next longest stretch of sea days was cruising from Funchal to Bermuda (5 days). By then we were all anticipating the end of the W.C. in site so there were lots of "good-bye" type parties etc. I have learned to really enjoy the sea days. We were very lucky that both of our "crossings" were wonderful weather. Even if you are an active person like me, there's always things to do and mischief to find!