Not sure I understand. After arrival and testing, followed by a sleep on board our charter boat, can we depart toward one of the quarantine anchorages the next day while waiting for our results, or must we stay put in the marina? (Vaccinated adults, unvaccinated kids)

yes.

The answer is yes however you can only go to the day zero quarantine anchorages which are at Norman and Peter.

Day 0 is arrival and testing, then sleep aboard that night on the dock. We can sail the next day toward a quarantine anchorage, with hopes of receiving our test results and release, right? If we get the release, we can go towards a normal mooring stop, if not continue to a quarantine anchorage. Is this correct?

@Trim - That is correct.