More than 8000 spectators are expected to flock to the Queenstown Events Centre for the first of five one-day internationals between the sides.
More than 2500 tickets were sold before Christmas, 1000 more than by the same time last year.
Speaking at Queenstown Airport as the team collected its luggage yesterday, Mills said the victory over the West Indies in Hamilton had buoyed the team.
"It was pleasing to get the win last night - our first twenty/20 win in our eighth match, I think it was, to level the series.
"[There] was certainly a good feeling among the team after the game and hopefully we can carry that momentum on to the game in Queenstown."
He thought the win added to the Black Caps' confidence.
"We played pretty well up at Eden Park as well. It was unfortunate to lose in the way we did [but] we played good cricket up there and fought our way back into the game and played really well last night.
"Cricket's a big momentum game, so if we can take that into Queenstown and throughout the whole series, I'm sure we'll do well."
The first practice was set for today and the squad would assess pitch conditions and decide which two of Mills, Tim Southee and Mark Gillespie would open New Zealand's bowling.
West Indies cricketers Shivnarine Chanderpaul and Ramnaresh Sarwan were identified as players the Black Caps needed to get out early.
"[Chanderpaul] is a huge player. He can really step it up when he wants to . . . so he's a big wicket for us."
Mills said New Zealand tended to perform well in one-day cricket.
"I think it's a more structured game and guys can identify and understand their roles much more quickly.
"They perform well under good leadership from Dan [Vettori] and he's a world-class bowler himself, so we should have that confidence going into the series."
Events Centre management company Lakes Leisure has traffic management plans in place for the crowds and signs will advise motorists not attending the cricket to reach Queenstown via the alternative Malaghans Rd.
No alcohol may be taken into the ground but three bars will be open.
"We're looking for the game to to be longer than last year, which was over in three hours," Lakes Leisure events manager Karen Gemmell said.
"But the way the tour's been going, we're hoping it will be a full day of cricket."
The QEC gates open at 10.30am and the match starts at noon.
