You could travel from Newcastle to Rosyth in Fife in under three hours by train for around £35. Or you could sail there in about 13 hours aboard Fred Olsen Cruises ’ Balmoral . The price is five times the rail fare, at £179 per person, but you get much more than transportation. You can enjoy a five-course dinner, the evening show, a comfortable night on board and breakfast before leaving the ship the following morning. On 18 August, the reverse itinerary, Rosyth to Newcastle , is available on the same ship. One-night cruises are fairly rare in the cruise world. The fixed costs of boarding and disembarking passengers is relatively high, and the additional spend is low. They may happen on “repositioning” voyages, where a ship changes its turnaround port. More cruise lines operate two-night cruises. These allow the guest a bit of time to settle in – and to assess if they like the idea of cruising.…