Be prepared for ports to be skipped or new ports to be added or exchanged, depending on weather conditions. I am amazed at how many people complain about this, despite it being said upfront on both the Hurtigruten site and your booking.

Same as above for excursions. We are going on a Northern Lights/North Cape trip and I am keeping my fingers crossed that none of the excursions get cancelled, especially the husky sled ride or the Sami experience with reindeer sled ride. But I know that the excursions, even though paid for, could be cancelled at short notice. They are refunded or sometimes can be exchanged for a different excursion. But it’s understandably upsetting if you saved for years to afford a Hurtigruten trip, sometimes especially for a certain experience and then it is cancelled…