A mother who gave her 16-year-old daughter vodka before allowing her to wander the streets of Ohakune during the annual mardi gras criticised police when they returned the girl to her motel.
Sergeant Mike Craig said the mother did not think she had done anything wrong.
The teenager was one of many people dealt with by police for breaching the town's liquor ban during the annual music festival.
Police made 20 arrests. Two were for assaulting police, two for disorderly behaviour and fighting and one for intent to supply Ecstasy.
Mr Craig said a man tried to evade police after being stopped at an alcohol checkpoint. He was caught after a short pursuit and found with about 30 tablets of the class B drug.