"The Government has played a role for successive Cups in keeping the team together.
"For there to be taxpayer investment, we need to see that benefit for New Zealand and I think New Zealanders want to see a Cup, if they're investing in it, raced here. But at this stage it is just too early to go much further than that. We should just let the team celebrate for a bit.
The comments came as the Prime Minister gave an update on New Zealand's involvement in the World Expo 2020 in Dubai expected to be held this year.
The Expo would be a chance for New Zealand to reconnect with the rest of the globe in a post-Covid world, Ardern said.
"We're here to really kickstart New Zealand's presence at Expo 2020."
She said the expo is designed to be a launching pad for countries into international markets and would showcase what is unique about New Zealand.
She said there is expected to be a mix of online engagement for Expo 2020 and the timing of the event means New Zealand is in a better position to take part.
Trade Minister Damien O'Connor said: "We're aware of the danger of travelling internationally - but we expect by that time many [New Zealanders] would've had access to the vaccine".
On a possible transtasman bubble opening next month, Ardern said she hadn't put firm dates on it because she didn't want moving goal posts - but wanted it "soon".
"Our goal is once we open, to be able to do it safely."
She said she wanted to provide enough warning for people and businesses to prepare.
Ardern said New Zealand could have an outbreak that could pause travel and protocols needed to be in place to manage that.
Ardern also answered questions on the 15-year-old who was recently deported from Australia to New Zealand.
She said generally New Zealand has issue with the way deportations across the board have occurred - particularly those among people who have strong links to Australia.
"This case is different in that it is a very young person involved."
She said the team here and Oranga Tamariki were doing the best job they could under the circumstances.
World Expo 2020
Expo Dubai 2020 was set to be held last year but was put on hold by the Covid-19 pandemic. It will now run from October 1 to March 31, 2022.
World Expos are a way of bringing together nations and visitors from across the world to showcase new ways of connecting and thinking while celebrating creativity, innovation, humanity and world cultures.
The Government had budgeted $53 million for participating, however the year-long postponement had added extra costs.
Choreographer Parris Goebel had been tasked with curating New Zealand's entertainment and cultural programme for the showcase.
It would be based around New Zealand's theme of Care for People and Place,
and would celebrate the country's creativity, diversity and youth over the six-months of the expo.
In December New Zealand's pavilion, which accounted for most of the budget, was 95 per cent complete.
The New Zealand Pavilion was designed by Jasmax architects and is located in the Sustainability District of the Expo 2020 site.
The building was designed to increase efficiency through its construction methodology and use of sustainable materials including Abodo New Zealand eco-timber, which will be a striking aspect of the pavilion's restaurant and hosting venues.
The pavilion's façade will be a highlight feature of the structure. Made from Kaynemaile, a lightweight, New Zealand-made mesh material that is 100 per cent recyclable and includes recycled materials in its composition.
The pavilion's visitor experience embodies New Zealand's culture, values and ingenuity through the theme of ''Care for People and Place''.
The pavilion is made of 201 tonnes of steel, 640 cubic metres of concrete and is on a 3616 sq m site.
New Zealand's commissioner general to the expo, Clayton Kimpton, earlier told the Herald the country's ability to "squash the curve" when it came to Covid-19 could further enhance its reputation around the world.
''If you're seen to be a healthy country that would seem to be a huge advantage on the world stage," he said.
