The company's website doubled its visitor numbers in the 24 hours after the event and more than 25,000 people responded to the match race through Twitter and Facebook.
The race received front page coverage in major British newspapers the Guardian, Daily Mail and Daily Mirror, and on networks including CNN, ABC and Sky News.
Raewyn Jones, chief executive of the Cambridge Chamber of Commerce, said the town was used to hosting major cycling and rowing events, but the royal visit was on another level.
Cafes and places selling food reaped good takings on the day of the visit, but other retail businesses did not see big increases in sales.
"They were prepared for that ... it's more about the bigger picture of highlighting Cambridge and what we've got to offer."
Tourism New Zealand's general manager of corporate affairs, Chris Roberts, said international media exposure had been extensive.
"The coverage has been overwhelmingly positive about the country.
"The equivalent advertising value of this coverage would runinto the tens of millions of dollars."
Cashing in on the royals
• Businesses including Shotover Jet say they have had a surge in inquiries and website visits since hosting the royals.
• The equivalent advertising value of coverage received would run into the tens of millions of dollars, says Tourism NZ.
• Still too early to see exactly how bookings and visitor numbers may be affected.