Is there anything to do in Dare?
Just walk around the passenger port area, maybe go to the Museum of African History
One day to stroll if you have time. The historical part near the port - many Indian temples, mosques, cathedrals, and areas with various embassies and ministries. But everything is in a dilapidated state, only where the embassies are things are normal. Further across the bridge to Masaki, where the former colonial villas are, and now expats and wealthy locals. This is through Coco Beach, the city is very large, but one day will be enough if you have that day.