Are you staying in Nassau then?
Bahamas consists of 700 islands so there is a wide variety of activities and destinations.
Nassau is rather nasty place with lots of crime. Leave your Rolex at home.
Weather is good, the sea is great and so is the rum.
Go to the beach and drink would be my recommendation.
Been to the Bahamas 27 times on my own sailboat, crossing over from Florida.
See if you can charter a boat and visit the Exuma Islands, clearest and and most pristine waters in the world.
Bon Voyage.