Hmm, called the camera store and they referred to my Canon G11 as "a little point and shoot."  Oh dear.

I found this great website (http://www.coolantarctica.com/Travel/antarctica_travel_clothing.php) that lists some very good items to bring (alas, more $$$), maybe I can borrow?
1. binoculars
2. luggage that can squish down.  This never occurred to me but it makes sense since the cabin size is small.  But then I look at wheeled duffel bags and they can range from $150-300. Whew.
3. Waterproof backpack
4. power strip

Fortunately I have plenty of warm clothing from having lived in Minnesota - glad I didn't get rid of too much!