Greece will default.
This will be marked as a technical rather than a commercial default, to stop a derivatives explosion.
Greece will then create an IOU money system to give it enough liquidity to keep it going ... for a few months.
But it won’t thrive. Greece has a socialist government with huge pension commitments and no idea of how the real world works.
Greece will become Venezuala on the Aegean - unless Russia sees enough strategic value in the place to bail it out.
The banks should have opened by now, but as of this writing there is now news in the interwebs. Strange.