Not to rain on anyone’s parade, but...
My best friend (Jess) was going to book on Crystal for her honeymoon and was looking at itineraries with me since I knew Crystal fairly well and she had only been once. This was around October 2021, so before the bankruptcy. I remember she was looking at August 2023, for Iceland to somewhere in Northern Europe by way of the UK, and it was gonna be on Serenity which was to be bouncing back and forth to Iceland. I have decent memory of that specifically because there was a vague plan I had to be in Scotland with another friend (Brett) who I also had gotten on Crystal recently in mid-August around my birthday to be doing a whisky tour, and the itinerary would have had Jess and her wife in Edinburgh for an overnight at the same time Brett and I were planning to be in Scotland, so we were planning to meet up and hopefully if the policy was returned post-Covid, visit the ship to say hi to some crew and get a drink or two.
That's a long way of saying, I really suspect this is the old reservations for that and they just haven’t been cleared from the Reykjavik calendar.