Te Runanga o Ngai Takoto co-chair Wallace Rivers, and Kōtui Hauora iwi chair, said Te Kahu o Taonui is a forum where Tai Tokerau iwi come together to determine the most critical issues they need to focus on.
"Since Covid appeared in Auckland it's become a major concern," he said.
They have been working in collaboration with the Northern Region DHBs since the first lockdown in March last year.
Rivers said they were motivated to pen their worries about the Government's Christmas plans as they appeared rushed and Northland's vaccination rate remained sluggish.
Of the 161,320 Northlanders eligible, 77 per cent were fully vaccinated and 85 per cent have had a single dose.
"It's concerning that this Government is leading with a precautionary approach but on the 15th of December it will an open flood of visitors, who may be unvaccinated," Rivers said.
"That's a huge concern for us given we'll probably struggle to reach the 90 per cent vaccination target by the time we open up."
Rivers said vaccination has been "extremely difficult" in Māori communities.
Currently, 64 per cent of the 50,488 Māori eligible in Northland are fully vaccinated, and 78 per cent have had one dose.
"... But we're not special in that it doesn't apply to just us," he said.
Right through-out the country Māori vaccination rates were being hampered – especially in the 16 to 34 age group - by longstanding mistrust as Māori had a "history of being neglected by the Government".
"Especially in those serious conversations," he said.
Te Kahu o Taonui feared Covid lawlessness where visitors who'd been penned in for months refused to comply.
"The only thing that's going to stop them are random car checks where police ensure they have a vaccine pass," Rivers said.
But Rivers said Police Commissioner Andrew Coster previously told Te Kahu o Taonui he was reluctant to risk the safety of his officers if they stopped every motorist at Northland's entry points.
The Advocate has contacted Coster for comment.
Rivers acknowledged their calls for unvaccinated or partially vaccinated visitors to be kept out threatened to disrupt a pivotal time for the economy.
He said the four weeks over the Christmas and New Year period accounted for roughly 60 per cent of profits over a 12-month period.
The other approximate 40 per cent had to be made up during the off-season, Rivers said.
"That is a reflection of the stress businesses are under... We're mindful of the economic stress throughout our region for all our businesses."
"Māori are also business owners – we're feeling that stress as well," he said.
"If there was a way to guarantee that visitors were double vaccinated and our people were safe then we would be happy and would welcome holidaymakers."
However, Rivers said he didn't want to be the voice for Tai Tokerau businesses.
"But we certainly don't just operate and behave in a way that leaves anyone behind."
He expected some response from the Government in regards to the letter – hopefully, an opportunity to discuss their concerns.
This expectation was pinned on the fact the Government was "health-focused" and had a "large amount of empathy".
The Advocate has separately contacted Ardern and Little for comment.
