About 400 people have been arrested over the weekend for alcohol-related offences as part of a nationwide crack down on alcohol and crime.
The arrests were made at drink driving checkpoints and by patrolling bars, bottles stores and known trouble spots. More than 1500 police personnel were involved.
Superintendent Carey Griffiths said the blitz was deliberately staged just before Christmas.
He said more people drink and drive over the holiday period and this weekend's operation was a reminder that such offending will not be tolerated.