take an extra memory card with you or have them develope what you have on the ship or at least put in on a CD so your can free up your chip.
Good thing to do on a day at sea when you are not taking as many pics.
I take lots of photos when I travel (or even stay home). I have over 1000 photos of my grandkids! I buy gig cards when they are on sale. I just put them away in my camera bag and when I am ready to go on a trip I have enough cards! On my trip to Oregon I filled up 2 1-gig cards with in 4 days! I told you take lots of photos! I also suggest buying a battery charger and rechargable battiers specifially for digi cameras. When I was in NYC my batt ran down and was not able to find AA battiers that would operate my camera for more then a few moments. Now I use Energizer Litihum AA battiers and Energizer NiMH rechareable AA battiers. I keep the litihum as a back up.