We did the NCL Sun (78K tons vs Star 91K tons) in March 2017. It was calm for us around Cape Horn and on the Atlantic side. It was rough on the Pacific side for us. But yes, Drake's Passage can be Drake's lake or Drake's shake. A weird comment, but if you across to the Chile/Pacific side note that the ship's wake is green in the South Pacific, instead of the normal and South Atlantic aqua color. Weird, but something that I still remember -- the green and then switch when changing oceans.
Tammy