A group, including Pairama and Manuel, chased Mr Rata and yelled at him to pick up the smashed bottle.
Manuel then struck Mr Rata with a closed fist two or three times before he was repeatedly kicked and stomped on as he lay on the ground.
One of the attackers used what police believed was a Nazi style metal helmet to strike Mr Rata around his head.
He died in Whangarei Hospital the next day after his life support was switched off.
When sentenced for the attack on the tourists Justice Tony Randerson said Manuel was remorseful and was not the main offender.
McEwen and Manuel were both dressed in reflective vests to look like policemen when they knocked on the door of the tourists' campervan about 10pm.
McEwen then produced a shotgun and held it under the man's chin and demanded money.
The couple were handcuffed and gagged and the woman was raped inside the campervan while Manuel guarded the man outside. McEwen told the man that if he did not give him the PIN to his bank account he would rape her again.
As the sentencing of the pair Justice Tony Randerson said McEwen - whom he described as a career criminal with more than 100 previous convictions - carefully planned the attack and obtained everything he needed to subdue the couple, including a shotgun, duct tape, reflective vests and plastic ties to use as handcuffs. He tried to force the woman to take sedatives before he sexually violated her.
The violation was "cruel and sadistic in the extreme".
During the horrific attack the pair took $3000 worth of property from the Dutch couple who had come to New Zealand on their honeymoon and hoped to become permanent residents.
"What should have been an exciting adventure touring New Zealand turned into a nightmare," Justice Randerson said.
