We are on Viking Star in the fog looking for our alternative port of Paamiut. The captain says if the fog lifts enough so we can see Greenland, we will turn around and head for Iceland to make our next port in time. A bit of a disappointment, but the captain is always right. It turns out that cruise ships rarely make the Greenland ports before August:
https://www.cruisecritic.com/articles/cruises-to-greenland-what-to-know-before-you-go