South Australians warned to stay vigilant as state prepares to open NSW border

South Australians have been warned to take extra health precautions as the state prepares to open its border with New South Wales.

Chief Public Health Officer Professor Nicola Spurrier has warned that the open border does not mean COVID-19 health restrictions can be abandoned.

"It's not a matter of everybody just do what they want and dining together and all going out and having a great time on the cricket pitch," she said.

"There are very, very strict rules associated with this."

Premier Steven Marshall has confirmed the borders could open as soon as Tuesday.

NSW has had 10 days without community transmission, and after 14 the criteria for opening the border will be met.

"I do encourage people if they are flying to wear those masks and wear that in a safe manner during the length of that flight," Professor Spurrier said.

The thousands arriving into South Australia from NSW won't have to quarantine, but hosts have also been given a message.

"If (visitors) get sick in South Australia, I want you to tell them that it is really easy to get tested here," Professor Spurrier said.

Among the new arrivals will be eight members of the Australian cricket team, who are set to touch down this evening and head to the Adelaide Oval Hotel.