There are a lot of kayak and canoe rentals on the region, typically associated with good places to go. I’m not going to try to list them, you can search them out yourself.
Sedges and Reeds are superficially similar, but actually quite different. But unless you are a biologist – who cares? ( Reeds are grasses, sedges are sedges. )
Sedges
Sedges tolerate a wide range of salinity, from freshwater to seawater, although they seem to grow best in brackish water. So, like above, if you are exploring a bay or inlet, that stuff all around you is most likely sedge.