We did Antarctica several years with National Geographic (Lindblad). As cruise lines venture into wilder places, it is reasonable to expect that incidents will happen. We had a healthy young man break his hip climbing over rocks on the way to the Port Lockroy museum. The break was so serious that we went to the Chilean base and he was flown out. Zodiacs doing beach landings. Crossing the Drake Passage is not sailing the Med or the Caribbean.