Good morning, we are currently considering the 20 day cruise Antarctica Holiday Voyage in December. It begins in Buenos Aries and ends in Rio. I'd really appreciate hearing from anyone who has done this itinerary or something similar. The itinerary includes 3 days in the Antarctic Sound. From what I have read, at the time of year, there should be a lot of marine life sightings, specifically whales which is my main interest. My previous attempts in whale watching have been disasters - specifically South Africa, Greenland , Canaries - each times for the best whale sighting opportunities but I have yet to spot anything but the far distant spout!