Wihapi said Maroon had lost only one of their six pre-tournament matches so far and were feeling confident of how they could perform in the tournament proper.
"We don't want to brag about how good we are but we've built ourselves up to be confident enough to be successful in the tournament. But anything can happen."
Rotorua Gold coach Boxer Smith is working with a fairly fresh squad - only three of his side played in the tournament last year.
He said this year's focus is more about building a strong unit for next year.
"It's also our first time as coaches so we're implementing a new culture and getting a bond among the boys. I think our boys have worked pretty hard to get ready for the tournament, physically and mentally.
"For a lot of them it's probably the only opportunity to play at our international stadium and it will be a big thing. All their families are going to be there so hopefully we'll get some home advantage."
Meanwhile, Apanui have had a last-minute effort to stay in the tournament after they struggled to make up the numbers required. The team have been able to draw upon players from Tauranga and Rotorua after announcing they would not be able to play.