I took the plunge on New Year's Day 2020; the crew on the Seabourn Quest did a great job in organizing the event. I don't recall the no. of participants but it was dozens on that sunny day off the coast of Base Aerea Antartica. I love looking at my certificate on my desk. Don't recall Jaegermeister but a group of us went to the whirlpools on the pool deck and enjoyed shots of Becherovka, a Czech herbal, liqueur (heavy on clove, cinnamon and star anise flavors.) My DH did not participate but did cheer me on. Go for it if you're healthy; I was 72 at the time and plan to do it again at some point in the future. The water temperature was 34 degrees F. Air temp was around 40 degrees.