Ten people were arrested in the Southern police district during the weekend's transtasman operation targeting alcohol-related offences.
Five reported assaults, five liquor licensing breaches and a dozen drink-driving offences were reported.
Police on both sides of the Tasman took part in the sixth Operation Unite, which was conducted from Friday night to Sunday.
Nationally, the operation resulted in 448 arrests, 170 reported assaults, 135 licence breaches and 364 drink-drive offences.
By comparison, during last year's operation, there were 340 arrests, 94 assaults, 63 licence breaches and 373 drink-drive offences.
Southern district road policing manager Inspector Andrew Burns said more than 100 staff worked on the operation across the district at the weekend.
The result was ''probably a stock standard weekend for us at this time of the year'', he said.
Police would continue targeting alcohol-related offending, including drink-driving and drunken behaviour, before Christmas.