Eighteen of the young men arrested in Gisborne after mayhem at the beachside BW campground on New Year's Eve will face court action, with most on charges of "riotous" behaviour and using cans as weapons.
Police locked up 67 people following the three-hour disturbance that police labelled a "riot".
All of those charged were male.
"Most of those taken into custody were given pre-charge warnings after their arrest and released," said Senior Sergeant Freddy van Duuren.
Several men in their late teens and early 20s from places such as Auckland, Christchurch, Nelson and Napier face "riot" charges. They are charged with behaving "in a riotous manner that was likely in the circumstances to cause violence against persons to start".