These are good questions.
Some of these answers can be found in Ayn Rands work. And looking into rules without rules.
The infrastructure would be similar to Russia before 1917 revolutions or New York post capital and pre governance.
The self protection would be similar to WW2 Switzerland where everyone is armed or a mandatory military like many other countries.
The society structure still needs to be run by organisers.
The issues that arise are letting the worst of humanity run things
Remember to connect a wallet so I can zap this