My wife and I typically don't leave reviews on review sites (particularly negative reviews) but we felt obligated to share with anyone considering Australis Cruises so you can best plan your trip.
WARNING! :) If you are under 35 this is not the cruise for you and the way to spend your time in Patagonia/Tierra del Fuego! Other resorts (like Remota or Explora) would be a MUCH better option.
1) Age: The average age of the cruise was 50-60+ and you only spend an hour or two off the boat per day! So for younger people seeking adventure you will go stir crazy. We don't have anything against older people (there stories are the best!) and we made some great relationships. The company tried (somewhat) to give easy, medium, and difficult hike options for the short excursions each day but even the "most difficult" hike would be 1-2 miles max and incredibly slow. A lot of the hikes were through normal looking terrain you could easily see not on a cruise. You can also see plenty of glaciers by land in Patagonia.
2) Food: Disclaimer. We live in New York City and are snobby foodie types. The food was buffet style and you can get MUCH better food and service for the same price or lower at other resorts. We were not too impressed with the dining experience (although our waiter was very nice).
3) Guides/General Service/Customer Service: For the price of the cruise, we felt customer service fell far short of our other experiences in Patagonia. Starting with the check in process - the check in lady was very rude, short and it felt like we were checking in to get on a $25 Greyhound bus. Not a cruise. We then waited in a very cheesy souvenir shop for over an hour to wait to get on the boat. In terms of service on the boat it was pretty good - nice bartender and servers. The guises however were so-so. We had much nicer, knowledgeable, personable and less condescending guides in other areas of Patagonia. They also did a very odd auction at the end of the cruise where all the proceeds went to the guides and staff. In America this is big Faux Pas or bad etiquette. Typically auctions are for charity and better entertainment should be provided than for asking for more money the last night of the cruise. Just our two cents though! I would note the presentations on the cruise to kill down time were interesting.
In summary, do Mendoza, other areas of Patagonia at nicer resorts instead of this cruise. If you really want to do Cape Horn and Teirra Del Fuego just take a quick flight to Ushuaia (dine at Kaupe a great restaurant) and take a day trip out to Cape Horn or the soprrounding areas.
Port check in was pretty uneventful. Not the nicest lady checking us in. Waited in a very cheesy souvenir shop.