But large crowds at horse racing meetings in Christchurch have helped ease the economic blow, she said.
"The sell-out crowds to the races has certainly contributed and hopefully made up for some of that loss and its great to see people about and about supporting local business."
Watson said the chamber is nervous about a community Covid-19 outbreak in the lead-up to Christmas.
She said pre-Christmas sales are needed to help them get through a tough year.
"What's on everyone's minds is making sure we don't have any disruptions between now and Christmas so that businesses can absolutely maximise that busy festive time and they need to make up for those losses at the start of the year."