The trapped patrons have jokingly dubbed them "Snowasis".
The group, who have embraced the moniker, offered an update to fans on their Facebook page.
"We're still here! The roads are still very icy and the main road is still shut, it's not gritted or ploughed yet as those vehicles have to get past the downed power lines. No way we are leaving here until at least late afternoon they say - if at all today!"
Not all 61 pub-goers stayed, Townsend said, revealing that a group with off-road vehicles launched a mercy mission to help a few parents get home to their young children.
A local mountain rescue group also helped evacuate a man who needed medical treatment for an "ongoing condition".
Townsend said the guests were "in really good spirits."
"They've formed quite a friendship ... like a big family is the best way I can describe it," she said. "One lady actually said 'I don't want to leave'."
Townsend said she hoped people would be able to head home once roads had been cleared.
- AP, additional reporting NZ Herald