We chose this cruise as it is a ferry and not overally "touristy" as an anniversary and birthday present for us. This was such an experience. The staff are amazing the scenery is fantastic.
Normally we never repeat a holiday BUT this is an exception. We had a partial view cabin which was very comfy as we thought we may spend some time there on the days we had nothing planned, however there is so much room on the ship we could have saved money and been happy with an inside cabin!! However it was still very comfy and nice to retreat every now and then since I have a chronic pain condition.
The staff were EXCEPTIONAL they will accomendate wherever they can and also have a smile on their face and they make you feel part of the family (corney I know!!)
We did 4 excursions dog sledding at Tromso which is worth every penny!! Snow hotel, which is such an experience but if you want to see snow sculptures the ship stops at a port where there is a place called Magic ice which is the same but cheaper and no dogs or reindeer!
We did the polar night snow mobile which was incredible but we had cloudy night but still so much fun! We also did the mines which we loved but not everyone liked, you have a loong coach ride through amazing scenery and a great guide and the mines are fab as is the soup, you will hear local recording of a band (they play Elvis which is a bit odd) but really lovely.
My final advice is you can have snow clothes etc but you really dont need it for the excursions as most of them will provide stuff. Have a decent coat, gloves etc and snow spikes if you are walking in town. Hope this helps and enjoy your holiday if you go x