TUI River Cruise passengers recently discovered that paying premium prices for a luxury escape does not, in fact, guarantee that your luxury escape will have working air conditioning. Holidaymakers reported spending thousands of pounds to float down Europe’s finest waterways while literally melting inside their cabins, a experience that transforms the phrase “heated debate” into something uncomfortably literal.

The irony is almost too perfect. River cruises market themselves as the thinking person’s vacation — intimate, cultural, refined. You are supposed to emerge refreshed and cultured, not drenched in your own desperation and questioning every life choice that led you to pay extra for a broken toilet alongside the broken climate control. One passenger might reasonably ask: if you cannot keep a metal box cool while it sits on water, what exactly are you doing with the luxury part of “luxury cruise”?

This is what happens when a brand promises exclusivity but delivers the mechanical reliability of a 1987 Vauxhall Vectra. The marketing department spent months crafting images of elegant dinners and scenic vistas. The engineering department apparently spent that same time on lunch break. Passengers got the scenic vistas, sure — mostly of other passengers fanning themselves with the complimentary onboard magazines, which is not quite the refined tableau the brochure suggested.

The real comedy is that TUI had one job: keep people cool and keep the plumbing functional. Two things. Two basic things that even budget airlines manage most of the time. Instead, passengers got what amounts to a very expensive, very slow-moving sauna with a river view and a toilet that does not work.

Luxury, it turns out, is just regular life with better marketing — until it stops working.