"We couldn't have hoped for more support, it feels like a home game for us," he said, signing an elderly woman's jersey and posing for a photo.
"The mood has changed a bit since [the loss to] Wales," he added, holding two blue-clad babies in each arm. "But we're looking forward to testing our skills against one of the best teams in the world [South Africa].
"They're a good side, but we can beat them," he said, finally pulled by security through a group of admiring girls.
Supporter Sam Latu, Samoan-born but now a resident of Manukau, said he hedged his bets by cheering for both his home country and the All Blacks.
"But if Samoa play New Zealand in the final, we'll be cheering for the Manu."
Another fan, Akeli Vaoga, said the loss to Wales had only made the tournament more exciting.
"We are progressing. We're getting stronger and stronger. And we're only looking forward."
One supporter relished the spectacle of 60,000 fans at Eden Park on Saturday for the Samoa-Fiji game, but was more sceptical about Samoa's chances against South Africa.
"I think it will be too hard... they're just too good."