I've spent the last couple hours taking up the challenge to compare US and UK fares, comparing like-for-like as much as possible. I arbitrarily picked one voyage on each of the four ships departing January 2025 and one voyage on each of the four ships departing July 2025 (for a total of eight voyages). I examined the fares for both Princess Suites and Queens Suites between the Cunard US and Cunard UK websites. I let Cunard pick the least expensive cabin in those categories and in every case both