A booze ban is being slapped on some of the Auckland region's most popular beaches for the first weekend in summer to avoid Crate Day carnage.
North Shore Police are cracking down on people drinking alcohol in public after last year's annual student celebration was marred by attacks and arrests. Buildings were trashed and revellers left comatosed and wounded.
In a warning on Facebook police say a 48-hour liquor ban will be in place on Hibiscus Coast beaches from Hatfields Beach south, including the Whangaparaoa Peninsula, and regional parks this weekend.
It says 30 people were arrested during last year's booze-fuelled celebration at Stanmore Bay and a police officer was assaulted. Revellers were also seriously assaulted and scores suffered deep cuts on their feet from broken bottles. Others were left comatosed from a day of binge-drinking.
During Crate Day students try to drink a crate of beer from midday to celebrate the first Saturday in summer.