We (family of 4--children ages 10/12) have 2 nights in San Juan prior to boarding a cruise ship in March. I am very interested in scheduling an electric boat bio tour during our visit. I currently have reservations at the Doubletree. From all of my investigation so far it looks like we would have to rent a car to get to Fajardo to do that. Are there any other options for hotel pick ups? Is it an easy drive at night? Any suggestions on the easiest/most economical way to make this happen?