A WhatsApp message inviting me to a silent disco - a dance party where music reaches your ears through wireless headphones - pinged at 7.50pm: "Please hit the U Lounge at 2130 and listen to DJ Rene on the turntables!"
DJ Rene, or Rene Gonzalez off the dance floor, is also the wellness coach of the ship I am on. And the ship in question, named The A, is a newly launched vessel targeted at younger travellers.
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A version of this article appeared in the print edition of The Sunday Times on May 13, 2018, with the headline Live it up on the Rhine. Subscribe