We have anchored there many times... and been a bit nervous each one of them! The only area for deeper draft
vessels is just downstream from the road bridge, and as others have said the flow is strongish and the room minimal. The holding is good in firm sand, though and we have always stayed put. Would not want to be there in severe conditions, though!
We have entered during the ebb (benign conditions at sea) with no trouble on the bar, but the outgoing current
can run 6 knots near the entrance which limits access for slower boats. With our 2.2 metre draft
we've never investigated the marina.
BTW, while Camden Haven is attractive, we've been denied access by breaking seas at the bar even at HW slack, so it isn't a slam-dunk entrance. Have sat out some strong winds there, opposite the RSL wharf, and the wind
vs tide situation can be quite unpleasant. Much more room than at Forster, though. If you do go there and the wx is nice do the walk up the Brother. The view from the top is outstanding!
Happy cruising, mate