Prime Minister John Key, Shortland Street star Pua Magasiva and singer Stan Walker were also there.
But their attire couldn't match those of the tens of thousands of fans who decked themselves out in a sea of colour.
Few had spent as much as Paul Adkin, who travelled from England complete with a custom-made "Mr T" outfit for the two-day sporting spectacular.
"It was absolutely worth the trip. And I pity any fool who didn't make it," he said.
Aucklanders Andrew Ahkew and Leona Williams went all-out on their voodoo priest and princess costumes. "It's the only time I can practise my black magic out in the open," Ahkew said. "I've been to the Sevens before, but you actually watch the games here.
"In the Sevens, half the people don't know what rugby is. It's just a chance to drink. At this event you're watching the games. It's a different crowd, a different atmosphere - a family atmosphere."
All spectators spoken to were opposed to the event moving to Australia, as could be the case after Auckland's five-year hosting contract with the NRL expires in 2018.
The Herald on Sunday revealed last weekend that Brisbane and Melbourne were preparing feasibility studies for potential future tilts at hosting rights. "I reckon everybody will go on strike if it ever goes across the ditch," said one of the Super Mario Bros, Lee Paahi. "It's staying in New Zealand, baby."
Duco Events and Auckland Tourism, Events and Economic Development hope this weekend's tournament goes without a hitch so they have the best chance of confirming the City of Sails as the long-term host of the Nines.
Alcohol management was a key part of their strategy. Free water bottles were handed out around the ground and the number of alcoholic beverages allowed to be bought was lowered from four to two at 3pm.
Inspector Peter Gibson said three people were arrested at Eden Park and a further 28 were evicted from the stadium.
Auckland's train system worked well. Fans received a free ride on presenting their Nines ticket.
The competition enters the knockout phase today.