We also booked the Prima back in 2021 while it was still under construction, though our cruise is not until August. DW and I both fell in love with an itinerary London (Southampton) to Reykjavik. It includes Brugge, Amsterdam, plus stops in Norway and Iceland including an overnight in Reykjavik. We had a previous cruise scheduled in the Norwegian fjords that ended up a Covid cancellation,.
I at first did not realize the ship was still under construction, and the cruise would be in 2023, not 2022. If it was 2022, we would have had our 45th wedding anniversary on the ship. We usually do something extra special for the anniversaries ending in 0 or 5 including some cruises. On our 46th on the ship, I intend to pretend it's our 45th. 😉