The voyage was billed as an amazing trip to the Antarctic Circle, the South Shetland islands, and the east side of the peninsula. We only did the east side. We were stuck in ice for the rest of the voyage, almost a week. People paid thousands of dollars, in some cases tens of thousands of dollars, and almost all of the itinerary failed to be delivered.
Quark defended themselves by saying everybody had fun. This isn't the point: we didn't spend all this money just to travel randomly and have random fun. Many people wanted to reach the Antarctic Circle. This was advertised in the literature. It explicitly said we would reach the Antarctic Circle. They did not get there. Not even close. I tried to get compensation, but was not offered anything meaningful.
If you buy their trips, you may not go anywhere near where you thought. If they fail deliver, they will not make it up to you. Think carefully about whether you want to spend so much money on such a risk. You might end up spending tens of thousands of dollars to sit on a ship, surrounded by ice. Quark gets paid either way.