"Don't drink and drive. Drinking and boating also don't mix and can have lethal consequences."
Mr Wright says the Far North gets very busy at this time of year with many visitors coming into the area.
"We want our locals, as well as visitors, to enjoy the summer in Northland. Have a good time, but look after yourselves and each other."
Whangarei/Kaipara alcohol harm reduction officer Acting Sergeant Mark Andrews said police would be conducting numerous checks on licensed premises to ensure compliance with the new laws.
Mr Andrews reported so far under the laws the licensees were complying, although police had issued offence notices for breaching the liquor ban. The new law was put in place to help reduce the harm caused by excessive use of alcohol and reminded people they need to drink responsibly, he said.
Under the new legislation a parent or legal guardian were the only people who can supply under-18s. Parents or legal guardians can also give written consent for others to supply alcohol to under-18s.