We took this Viking cruise in Feb 2019.  As far as what to pack for the outdoors — a warm jacket, snow pants, long underwear, warm socks, hat, boots, gloves, goggles, and hand/foot warmers.     Some of the excursions we really enjoyed — Arctic Landscapes by Husky (Alta) and Lifestyle of the Sami (Tromso).  Try to plan a private excursion (or two) to see the Northern Lights.  We did the ship’s excursion and it was too short and too crowded.  Sadly, we didn’t see the lights.  If you plan to