"We are now responsible for the behaviour of people...the stadium licence holder has serious legal responsibilities under new legislation that came in a couple of years ago," he said.
Tew was delighted with the the operation of the tournament, the standard of sevens, and the character shown by the New Zealand team. Olympic status had raised the quality of sevens around the world.
While there has been general speculation about moving the sevens to a new venue in an effort to recapture the glory days, Tew said NZR viewed the sevens as a long term partnership with Wellington.
"We didn't get enough people...we repositioned and re-priced it," he said.
"We'll sit down with our partners, the city, the stadium, world rugby and the police and review it very thoroughly. We didn't get enough people...(but)I wouldn't call it a disaster."