The bio luminescent bay was a thrill, the guide was great. When we were there in 2007, only 1 power boat went there per day for the disabled but now they allow the fully able bodied to ride several power boats per day and they practically run over the kayaks and shine bright lights in your eyes blinding you. This will ruin the area according to the guide we had in 2007. Some tours opposite us used no passive lighting also which ruined the view of the glowing water. San Juan in general seems to have a new wealth in many areas since 2007 but they still have poor, starving dogs around and for that reason I won't be back. I don't like that cruelty. Our bus guide told us that locals deliberately dump dogs they don't want on the beach to die and no one does anything about it. There are poor people there too but there is help for them, we saw Salvation Army and other missions but no help for the dogs. Shame on San Juan! it broke my heart.