Prime Minister Scott Morrison says he couldn't wait to get back to Adelaide after this week's decision to lift South Australia's border restrictions with NSW.
After touching down in Adelaide for the first time since February, he said thousands of Sydneysiders would be right behind him, providing an $800 million boost to the SA economy.
He also resisted any criticism of the state government after a number of delays in dropping the requirement for travellers to quarantine for two weeks and with the approach to borders adopted by other states.
"I'm a patient man. Patience is important when it comes to dealing with crises," he told reporters on Saturday.
Mr Morrison said it was always appropriate for states to make their own decisions on when it's right to "move to the next step" in relation to COVID-19 measures.
"All I've simply asked is when states make those decisions that they do it efficiently, that they explain the reasons and they seek to administer it in a way that is done fairly," he said.
"They are judgments that at the more micro level the states will make and so I leave them to make them."
Mr Morrison's trip to Adelaide allowed him to visit the newly constructed shipyard for the navy's fleet of frigates, and speak at the SA Liberal Party's annual meeting.
The gathering featured chairs placed 1.5 metres apart although social distancing was less evident among the long line of party members waiting to get in.
SA Labor criticised the party's decision to go ahead with the gathering after it cancelled its own annual convention out of respect for the ongoing COVID-19 restrictions on others in the community.
"When scores of South Australian businesses are still facing crippling COVID-19 restrictions, it's just not a good look for the Liberals to be holding such a large event," opposition treasury spokesman Stephen Mullighan said.
"Why is it that there seems to be one rule for the Liberals and another rule for everybody else?"
Australian Associated Press