Police in Otago have already wielded new powers aimed at curbing alcohol-related disorder, with at least three people in the region given infringement notices for breaching alcohol bans.
The infringement notices come after the Sale and Supply of Alcohol Act was introduced last week.
Despite the Friday before Christmas traditionally being one of the busiest nights of the year for drunken disorder, police and emergency services across the region said it was relatively quiet.
An Englishwoman and a Canadian woman aged in their late 20s unwittingly became the first people in Queenstown to be punished by the new national alcohol laws, on Friday at 11.25pm.
Sergeant Steve Watt, of Queenstown, said yesterday the "unco-operative and belligerent" women were both arrested for breaching the downtown liquor ban after they refused to hand over their alcohol or give details to police.