I am planning my family's vacation to Puerto Rico. This is our first family vacation and I want to make it memorable. We (my husband, myself, and our 3 adult children) will be spending 4 days in San Juan, and would like to visit Vieques for a day. Is it possible to get there, explore the beaches and towns, see the biobay, and get back in on day? If you had one day to be there, how would you plan it?