We are living in an era when travellers are spoilt for choice with a plethora of online discounts and ready upgrades. As such, it can be hard to justify paying for luxury, much less a river cruise.
Why pay more, for example, for a river cruise? It simply entails a leisurely jaunt down a river on a former old-school rice barge. With that money, you could probably get a discounted suite on a feature-packed, activity-filled modern cruise ship.
There is, however, an answer and it is simply this: exclusivity.