We have been to the North Cape twice, but on Ocean Majesty, so I can't speak for Spirit. The cruise depends a lot on the weather. Our first visit was in July with what the travel industry call 'brochure weather'. Sunshine, pale blue sky and absolutely flat sea. The second time, this year,was in June and it snowed, only a bit, but it still counts! At 11.55pm the sun came from behind the clouds, I don't know how Page & Moy fixed that! This year's trip included Spitzbergen and Magdalena Fjord, which was amazing, but still very cold. We saw loads of wildlife, including killer whales, beluga whales, sea eagles, seals, walrus, red squirell, arctic hare, my personal favourite a snow bunting and lots of sea birds. We enjoyed it so much we have booked again for this year, but in July. I hope you enjoy it as much as we did.
Thank you very much for your information.