Ferry to smaller islands
If you are up for an adventure, then take the ferry to Vieques or Culebra. Make sure you check into the weather first. We went out in July 2008 when there was a tropical storm brewing just over 1000 miles out, but did we feel it. As soon as we got to Vieques, we made plans to take the same ferry back to Fajardo. It was just me wanting to feel safe while the sun was still out. I wish I would of stayed in Vieques, and discovered.