Just curious, but what happens to the 12/23 sailing if the Norway is late leaving dry dock for some reason? She will be sailing empty from Bremerhaven, I believe, to make it to Miami for the Christmas cruise. Has this ever happened?
Delays sometimes happen with ships that are in drydock for emergency repairs. I don't think you have anything to worry about. This is scheduled maintenence work that eveyy ship receives about every 2 years.