Having finished his All Blacks career without a third World Cup winners medal, SBW joined new UK Super League outfit the Toronto Wolfpack on a big-money two-year deal.
Ahead of the 2020 season, Williams and his family flew to the Gold Coast, so the 34-year-old can prepare his body for league.
He says he's confident he'll get back into the swing of things quickly.
"When it comes to skill and knowing the game, I grew up playing it so that will be no different," he said. "It's probably just the physical demands I'll have to tap into this month."