Nope. Enjoy your time in Puerto Rico!
Yes! Please visit the following link from Chabad for hotel information: https://www.jewishpuertorico.com/templates/articlecco_cdo/aid/472157/jewish/Hotels.htm If you prefer Airbnb, that is a great option as well in the San Juan area.
Uber is the easiest and most convenient way to get around Puerto Rico. Here is a link to a local car rental company if you prefer to have a car: https://www.charliecars.com/
Yes! The Chabad of Puerto Rico offers prepared food that can be ordered via their website. In addition they have kosher food available for purchase on site at their store. More information is available on their website: https://www.jewishpuertorico.com/templates/articlecco_cdo/aid/5274798/jewish/Kosher-Takeout.htm If you will be ordering prepared food from Chabad, kindly put in your orders with as much advanced notice as possible. In addition, there is a kosher meat restaurant: https://eatomrkt.com/miramar/