We took an Uber from a hotel in the Ocean Park area and I think it was $10, this was around 9:30 am. We then Uber'd from Bacardi to the ferry port for $11, around noon. We then took the ferry over to Old San Juan for $.75/each. La Casita de Rones is steps away from the Old San Juan side of the ferry port and has great food and drinks and a great view.
We did the tasting tour at Bacardi and it included one of their drinks from their menu and included a tasting of 4 different rums, one of which is only available at the distillery. Our guide was awesome and did a great job on the tour.