Two 15-year-old girls have been sent home from Newquay after being found drunk and unaccompanied in the Cornish resort.
The pair, from Bristol, were drinking a litre bottle of vodka when they were found and taken to the police station.
They told police they had been drinking for 24 hours. Their parents were called to collect them after police discovered they were staying alone in the resort.
Action was taken as part of the Newquay Safe Partnership scheme.
The initiative was set up following the deaths of two teenagers in the town in 2009.
It aims to promote safe, enjoyable and responsible holidays to young people visiting the seaside town.
Supt Julie Whitmarsh, of Devon and Cornwall Police, said: "This really sends a very strong message as to how we will be dealing with young people who place themselves at risk as a result of drinking alcohol."
"Parents will be called at any time to come and collect their children. Their anti-social behaviour will follow them home," she added.
In 2009, two teenagers died falling from cliffs after drinking with friends in the town.