All too often young people think they'll spend the night in a cell sleeping off their hangover before being let out in the morning.
"They soon sober up when they realise their British passport does not grant them immunity and they're alone in a foreign prison cell.
"Its particularly sad to see younger people throwing away years of their lives, often as a result of a risky decision made in the heat of the moment and after a few too many drinks.
"Not only can you end up with a criminal record but the effects on your family can be devastating."
More top news
A police raid uncovered what is believed to be cocaine that had been stashed in nappies, and 40 cannabis plants.
The prince attended the rugby match in his role as patron of the Invictus Games Foundation, the official charity for this year's game.
The prime minister pitched her comments firmly towards unionists in her first campaign visit to Scotland ahead of the general election.