We selected this cruise because of the itinerary: South America (from Chile to Argentina), with sailing around Cape Horn and then along the Antarctic Peninsula. The itinerary did not disappoint us. Except for being unable to dock at Puerto Montt (Chile) due to strong winds, everywhere else the weather was excellent and docking (if applicable) went without any issues. Even notorious Drake Passage felt more like a lake. Every port was different and we did not regret that actually we did not set foot on Antarctica (only sailing along). The scenery was magnificent and diverse, wildlife was plentiful to see and to enjoy. The enrichment lectures by the experts led by Scott were excellent; all of them had real Antarctic experience. We even had a visit by the members of the US team from the Palmer Station who boarded the ship for a few hours and gave us another dimension what it means to work as a researcher in Antarctica. The onboard experts were equally good who had skills in public speaking, did not trivialize subjects and were always available to answer additional queries. You appreciated the scenery even more with this background.
Shore excursions: overall good but clearly overpriced. The excursion staff very nice and helpful. Nonetheless, you can do yourself a big favor booking ahead of time the same or better tours at 50% discount price via independent tour operators (we did this in the Falklands, Montevideo, and Buenos Aires)--you have more intimate experience at much lower cost. HA should also consider adding more active (strenuous) options on shore and in smaller groups.
Some specifics about the tours: don't waste your money on the flight to Antarctica, most of the time flights are canceled and you will see more from the ship. Do not take an excursion in Puerto Madryn to Valdez Peninsula, unless you like to seat on the bus for 6 hours and see for 20 min (and from the distance) colonies of sea lions.
The only glitch was a low temperature in our stateroom due to a/c blowing literally arctic air inside. The staff was trying to resolve mechanical issue for four days. I must admit that their attitude made us to enjoy the cruise despite this inconvenience. Thus, 5-star experience.