We are sailing Mercury Rio to Valparaiso 1/3/02. We have purchased the 2-day pre-cruise package at the Sheraton Rio from Celebrity. Since we booked our own airfare ($695 round trip from San Francisco on United) it gives us a little insurance in getting to the ship on time in case of delays enroute, and also gives us some time to see this fascinating city. We got a great price by booking early (April, 2001) for a category 4 cabin on the Vista deck--$1,500 pp not including taxes, port charges, etc. I have sailed Celebrity before and was very pleased. I don't think you can beat a deal like this for a very exotic cruise. Just be prepared for the change of weather-Rio 90 degrees, Ushuaia, 30-40 degrees, and possible rough seas.