Premier Steven Marshall says it's a win for businesses who have done it tough the past 18 months.
"I know this is going to be a big relief for a sector that has done it disproportionately hard for a long period of time," Mr Marshall said.
"We can only do this because of the great work of all people of South Australia."
A total of 64 new cases of COVID emerged on Friday, the highest daily amount since the pandemic began, as exposures sites continue to increase across Adelaide.
The new cases on Friday include five children, four teenagers, 31 women and 24 men - as testing sites become inundated due to interstate travellers arriving for the test cricket at Adelaide Oval.
The double-dose vaccination rate for South Aussies aged 12 or over was 85.3% as of Thursday afternoon.
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