Siesta Key is a big place. Are you going to fly from public or private property? This might change things. Your property or someone elses? Might hange things. Do you live in the US or are you visting from another country? Might change things. Have you registered your drone? The list goes on and on. Your question is very vauge for such a specific answer. I'd recommend search siesta key and UAV or drone for more information. Perhaps even call the local police dept.
Edit: I also suspect there is more then one Siesta Key in the world. I'm guessing you are refering to Siesta Key in FL outside of Sarasota.