Hi - I can't comment on the local specifics (including local CG/harbourmaster issues which vary enormously from place to place) but there are a couple of general points. An anchorage is not a mooring
(at least not in the UK). When you anchor
you use your own kit that you then take away with you. When you make/take a mooring
it is (or should be) heavy fastening on the seabed (eg lump of concrete) with chains around it up to a big buoy from which the pick up line is trailing.
So: I would not leave a sailboat unattended on its own anchor for long periods. Not even on my beloved Rocna! But I can and do liveaboard
at anchor for weeks and months, often leaving the boat for several hours at a time and very occasionally in a very secure place overnight. (There are places and people who leave an anchored boat unattended, but not me.)
But lots of people leave their boats happily on moorings. I would want to know what was on the seabed, and how it was attached to the buoy, and I would look carefully at the specific spot (eg exposure to fetch, height of tide, possible flooding, storm exposure). It is much much cheaper than a berth. You will need to check where and what cost you keep a dinghy
to get to and fro as well, and also where you can securely park whatever vehicle you use to get to that point.
If you are going to leave your boat on a mooring it is well worth investing in solar/wind to keep your batteries
topped up. Security is a whole other issue which I'm sure other people will comment on.