In San Juan consider a tour of the rainforest "El Junque" , a tour of the Old town, or just go shopping in the wonderful shops located on those great and narrow ancient cobblestone streets.....right behind Senor Frogs by the pier! Use your browser to look up San Juan shore excursions!!
St.Thomas offers a nice beach day at Magen's Bay very affordable....and for Nassau....consider Junkanoo Beach or Cable Beach!!