Kean was arrested and tried before an Auckland justice sitting in the Fiji High Court, Gerard Winter, who convicted him of manslaughter.
Winter noted that the reception at the Royal Suva Yacht Club a relative of the groom, John Whippy, was drunk. Several fights had taken place during the evening and at 2am Whippy left in a taxi.
"As John Whippy was assisted to the taxi he was in an ugly drunken mood," Winter said.
Kean told him to mind his language but as the taxi left Whippy kept yelling. Kean demanded the taxi stop.
"(Commander Kean) then came up to John Whippy and punched him three times in the face," the judge said.
"John Whippy first hit his head against the taxi light then fell heavily to the ground on his back. While he was lying on the ground Francis Kean kicked him on the chest. The accused was dragged away by an unidentified woman but returned to kick John Whippy's head."