"It occurs in a shoulder season ... so from a tourism industry perspective, you'll see another peak created after the traditional summer peak and that's obviously great for the economy."
Other New Zealand regions were also being promoted to encourage participants to travel the country before or after the event, De Monchy said.
Hospitality New Zealand spokeswoman Rachael Shadbolt said there would be more than enough accommodation and hospitality venues for the visitors.
It was possible that accommodation businesses would put up their prices with the increased demand, but that was not normal practice for cafes, bars or restaurants.
"Anecdotally, we understand that the WMG participants are more inclined to enjoy the finer things in life - they want comfortable beds, good showers, great food and wine,"
Shadbolt said.
"Many treat this event as their regular world trip so it is expected that they will enjoy the best that Auckland and NZ has to offer."
Alex Gardner, manager of the downtown Britomart Country Club, said the bar was gearing up for a busy couple of weeks.
"We're getting right behind it because we see it as a big opportunity to show that New Zealand can do more than just rugby," he said.
"We're expecting it to be pretty busy ... we've already had quite a few of the New Zealand athletes come through."
The bar had bought additional stock in preparation and was offering discounts to games participants.
Gardner expected the athletes to be a well-behaved lot, and perhaps tip a little more generously than your average Kiwi punter.
Auckland Mayor Phil Goff said the event was like a "mini-Olympics" which didn't requiring massive infrastructure investment or going hundreds of millions of dollars into debt.
"This is the largest thing that we've put on since the Rugby World Cup back in 2011 and it's probably going to be the biggest event for a decade to come," he said.
"We're talking about 28,000 registered participants and the likely spending is going to be in excess of $30 million in the city, and that includes nearly a quarter of a million bed nights."
While there will not be widespread broadcast coverage of the games, Goff said it could still do wonders for New Zealand's reputation.
"That will be through participants coming from all of those different countries going home and talking about New Zealand. What I've always thought is when it comes tourism and reputation, word of mouth is far more valuable than anything else."
World Masters Games local organising committee chief executive Jennah Wootten said the final preparations were on schedule, despite the rain deluge last week which caused widespread flooding in the region.
Organisers, along with some 4000 volunteers, had begun unpacking the sporting and other equipment into the event's 48 venues.
She said the Games looked set to cost no more than the allocated budget.
"Our budget is $35.9 million and we are confident we will deliver the event within that budget."
The World Masters Games
- 28,000 participants
- 16,000 international visitors
- 244,000 visitor nights in Auckland
- Estimated $30m benefit to the Auckland economy
