Mr Turnbull said this year organisers had chosen a more simplified model and the line-up was 100 per cent New Zealand and they were not relying on the borders to open for the festival to go ahead.
Last year more than half the tickets had been bought by Australians, but so far this year nearly all had been bought by New Zealanders living in Auckland or Wellington, he said.
Snowboxx NZ was a collaboration between Europe's leading winter music festival Snowboxx (held annually in Avoriaz, in the heart of the French Alps) and Rhythm & Alps.
Turnbull said the main stage would be Treble Cone's top car park but there would also be shows at Cardrona and events at the Lake Wanaka Centre and other venues around the town.
Turnbull said organisers were aware of a four-day music festival being run by the Australian company Snow Machine at The Remarkables and Coronet Peak skifields in the same week in September, which was set to attract 5000 people.
"We are OK with that as they have a different model and are relying on the borders to be open, but we did not want to take that risk.
"We think they will be sweating a bit more," Turnbull said.
- This article was first published in the Otago Daily Times