Yes. Patuxent Adventure Center Paddle Sports has a pop-up shop at the wharf. They are open on the weekends.
Yes. They are not always there, for example, on a recent rainy Saturday. You can get their phone number from an info page in the window of the small building on the warf. The Saturday I was there they said they were not renting out anything because of weather.
I have never seen anyone inside.
I don't think so
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