The latest Central Otago District Council quarterly report highlighted a downturn in bookings, revenue and visitor numbers at the visitor centre network.
A total of 17 staff are employed by the iSite network across the region, four full-time.
A review was expected to begin in the next fortnight.
An independent adviser will inspect whether the centre suits the needs of visitors and local communities and what the future of an iSite might be.
The report's figures were a talking point at last week's Cromwell Community Board meeting where technology and the convenience of booking apps had been discussed.
Tourism Central Otago general manager Dylan Rushbrook said technology and online tools had made booking procedures for visitors much simpler.
The council's January-March quarterly report highlighted an overall revenue decrease at Central Otago iSites of 35% ($142,895) against the corresponding period last year.
Total bookings for all centres had decreased by 42% ($143,064).
Bookings accounted for 75% of revenue, the report said.
"The decrease in revenue is due to less group bookings, softening international visitation and the increasing ease of booking online," the report said.
"This is also a national trend with the decrease in bookings being felt across the national iSite network."
A total 13% decrease in visitor numbers to Central Otago iSites had been reported, including 15% in Alexandra, 18% in Cromwell and 7% in Ranfurly.
However, visitor numbers in Roxburgh had increased by 2%.
Mr Rushbrook did not rule out the prospect of Tourism Central Otago engaging commercial partners in future.
"Looking ahead in five or 10 years, what is an iSite going to be doing and what is it's value in the future?"
He added it was about balancing the needs of the community and visitors alongside the costs in operating the network.
The report was expected to be completed by November.
