Premier Gladys Berejiklian has announced a new limit of 10 people for group bookings and a cap on the number of customers inside a venue to 300 people following a resurgence of COVID-19.

Ten new cases of the virus were confirmed in NSW today, all of which have been linked to the Crossroads Hotel in Sydney.

The Crossroads outbreak alone has now recorded 28 cases.

Pub-goers can also expect to see "hygiene marshalls" patrol Wagga's venues during peak lunch and dinner periods to ensure patrons are abiding by the rules and business owners are adhering to their now mandatory COVID-Safe plans.

North Wagga publican Brendan Crouch, who manages The Black Swan, said the new rules were disappointing.

"I think people have got used to having that little bit of a bigger crowd and I think it will be hard to enforce straight away," he said.

"People don't always listen to the news, it's up to us to be the guardians ... it's just hard."

Australian Hotels Association Wagga president David Barnhill said nothing would change for local pubs apart from cancelling larger bookings.

"Nothing will change ... we've just got to make sure everyone's compliant. That's what it's all about," he said.

"From our point of view we're not too bothered apart from the fact that we're going to have to disappoint some customers when I ring them up ... and let them know that we can't take their booking."

Mr Barnhill, who runs the William Farrer Hotel, said Wagga's pubs wouldn't be affected by the 300 person cap.

"From a numbers perspective we'll still be able to run the hotel how we have been for the past few weeks," he said.

Mr Crouch said he and his patrons at The Black Swan knew the rules were necessary, but his customers missed mingling and chatting over the bar.

"The amount of senior people that come into the pub, they've come back like nothing's happened. And they seem to be that happy to be talking amongst themselves, with the company."

"Even the people who weren't sort of close, they talk to each other all the time now. I think it's brought the older community much closer together."

Co-manager Sue White agreed, saying their regular customers couldn't wait to get back to the pub and socialise when restrictions were first eased back in June.

"Some of them took the day off, the first day, to spend the day here together. They were here right on opening and they stayed all day," she said.

Premier Berejiklian said she was concerned about community transmission "bubbling away beneath the surface" that had not yet been traced.

"We are in a state of high alert," she said.

"We are now at a very different phase of the pandemic."

Large hotels with a capacity of greater than 250 people are to have a hygiene marshall on duty whenever the pub is open.

The new measures will come into force from just after midnight on Friday morning.