Go for an evening walk by the waterfront at Bluefin Rock Harbor Marina. You'll be charmed by the sight of small boats bobbing around under the moonlight.
You'll be spoiled for sightseeing choice when visiting Key Largo. Bluefin Rock Harbor Marina is a good place to begin here, but there are numerous other worthy places to discover. Jimmy Johnson's Big Chill, Harry Harris Park, and Pigeon Key are not far from the yacht and boat harbor and will top off your day nicely.