Rod, as mentioned to enjoy your full day in Old San Juan, check out of your hotel and have your luggage held for you. Take a taxi into Old San Juan or take a tour depending on how much you like to walk and explore. Old San Juan is a great walking city but it is hilly up to the El Morro fort which is not to be missed and explored. The walk is all downhill from there. You could probably book a good taxi tour for about $35 +/- and return to the hotel to pick up you luggage. Have the same driver wait and bring you to the pier which is about $10 +. Forget your paid transfer. Half the time the transfer taxi forgets you anyway! If you wish to visit a beautiful hotel the night you check in, don't miss a visit to the Wyndham El San Juan on the Isle Verde. It is great with many lobby bars, dancing to Salsa music, and a Grand casino plus a lot of restaurants.