TAR is The Tourism Association of Rincon and they have full menus of Thanksgiving Dinners for
If you are looking for something you can take back to your Vacation Rental you can try any local Bakery as most prepare dinners to go/pick up. For example, EC Bakery & Punta Mar Bakery. The Rincon Smoke Shack (food truck) will be open serving too. Don't forget to ask for 'Coquito' - Eggnog Puerto Rican style!!
Enjoy your Thanksgiving Rincon Vacation!