That's a shame, I'm sure lots of people will be very disappointed.
I know there were problems last season but have there been any issues this year so far ?
So sorry to hear that your anniversary plans have been ruined. I hope your husband is feeling better soon and that your insurance claim is settled promptly.
The small print in the offer is -
Advertised 10% discount based on a reduction from the lowest fare available between 18 January and 31 January 2024.
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Your original post has been moved to the roll call for this cruise.
https://boards.cruisecritic.co.uk/topic/2949345-june-8-2024-millenium-best-of-japan/page/4/
It's not something that cruise companies do regularly but unfortunately Cunard is just one of many cruise lines making changes to their trips in the region.
I hope you can salvage something from your trip, did you book any of it via a Travel Agent?