"Part of what we're trying to do is make sure we don't just get more people coming through the airport and coming to New Zealand for a couple of days ... the reality is we want them to come here, spend money, and have a quality experience."
Mr Key's comments were made at today's launch of a tourism sector report by the Ministry of Business, Innovation and Employment.
The report shows Australians make up 45 per cent of the 2.6 million tourists who visit every year, up from 31 per cent 10 years ago.
They spend the least money while here - an average of $2017 each per visit, compared to $3449 for Chinese visitors and $3502 for tourists from the UK.
However Australian tourists still contributed $2.195b in the year ended June 2013, far above any other single country market.
Visitors from all countries had been spending less and staying fewer days since the global financial crisis in 2009.
A greater proportion of visitors were those seeing friends and relatives, who spend less money on their trip than holidaymakers did.
Fewer high-spending visitors from the UK and Japan were coming to New Zealand, the report said, and those markets were expected to decline further. But New Zealand had seen positive growth in visitors from China, up 31 per cent in the past year.
The rising wealth of Pacific rim countries also presented opportunities for New Zealand, Economic Development Minister Steven Joyce said.
"The number of people who can travel within one flight from Auckland is growing constantly and quickly," he said.
"So we have lots of opportunities, but again the products will have to evolve to reflect the needs and interests of these new tourists."
The industry needed to develop a better understanding of those markets and new packages to attract "higher-value" business.
The tourism report is the fifth of seven key industry reports to be released by MBIE.
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Key findings:
* More than 2.6 million people visited New Zealand in the year to March 2013
* 45 per cent of visitors are from Australia, up from 31 per cent in 2003
* Visitors from all markets on average spend $2671 each, down from $3704 in 2003.
* Visitors from all markets stay nine nights on average, down from 10 in 2003
* Australian visitors stay seven nights and spend $2017 on average
* Chinese visitors stay four nights and spend $3449 on average
* UK visitors stay 20 nights and spend $3502 on average