While two of the crashes — one on October 31 and the other on November 4 — were non-injury, the worst was a two-vehicle collision on Sunday, November 3, when one person died and three others were seriously injured.
Wanaka Senior Sergeant Fiona Roberts said she would "keep banging the drum" about driving to conditions on the Crown Range alpine pass, but acknowledged visitors to the area might not pick up police messaging about conditions as easily as locals.
Road speed signs changed throughout the drive between Wanaka and Queenstown.
They were there for safety reasons, she said.
"Give yourself another half an hour to take the pressure off driving times," she said.
Five people were charged with driving with an excess breath alcohol result — four were between 250 and 400 micrograms, which incur a fine rather than a court appearance.
However, one driver recorded 770mcg and would be attending court, she said.
The message there was to take the pressure off by going out and enjoying yourself and taking a ride home, she said.
Two other people were caught driving without a licence and a man, 48, was arrested for driving while disqualified.
Police arrested another man, also 48, for breaching bail. He was scheduled to appear in court on Tuesday.
Recent Halloween and Guy Fawkes celebrations were valuable reminders for people to consider their neighbours and let them know they were planning evening activities.
Wanaka police had received a complaint about people knocking on their door during Halloween, she said.
