I bought my first boat there also this past May. The docks are floating, I believe and they are a mile or so up the river where it seems protected. The entrance to the river is a narrow stone lined channel and it ends not far up from the Marina (at least it gets a lot shallower and smaller).
But for a new boat owner I was confused as to how I should tie the boat off. Most of the boats had finger piers, although they had the same ring arrangements. My boat was just tied off along the main dock.
Other boats were tied up the same way.
The boat was there for several weeks and I was nervous about leaving it like that but it was fine. The Marina people said they would keep an eye on it, and they did, as I was coming up from NJ while I made arrangements to move the boat to NC. Eventually we moved the boat to a spot where I could at least tie a couple of spring lines along with the bow and stern lines.
The boat went through some heavy thunderstorms and rain while there, but it was fine.