The activity is a two-hour tour through wooden platforms built high up in the trees, linked by four long wires, or zip lines, on which visitors travel in "flying fox" harnesses.
Two guides take the small groups through the zip lines, and discuss ecological issues.
The first day of operation turned out well, despite rain falling from mid-afternoon.
"We had more than 30 bookings for the first day, and many more for the weekend.
"It does not seem as though the weather is deterring Queenstown's visitors and locals from having fun," managing director Trent Yeo said.
Ziptrek has filed an application for resource consent for future development of its zip lines.
It originally had consent for a six-line operation, but had to change plans when a tree was removed.
Skyline Enterprises, which operates the gondola on Bob's Peak, had applied for permission to cut down several trees which could be a risk to the gondola line.
Lakes Property Services had forgotten Ziptrek had already been granted consent to use one of those trees.
Mr Yeo was reluctant to talk about the issue.
"On a day like this, I would rather just focus on celebrating our opening," he said.
Ziptrek tours last about two hours and cost $119 for adults and $69 for those under 15 and seniors over 65 - plus the gondola ticket.
