First of all if you are in Florida I'd highly recommend visiting Siesta Key Beach which is near Sarasota. I have never seen such a perfect white beach. It felt like you were walking on (GF) Flour it was that soft. Totally perfect tropical place. We loved it.
Secondly if you find yourself in or near Sarasota id highly recommend stopping at Beckhams on the Trail for food. Once again Sarah from GF & DF WDW recommended this place and we were not disappointed. As it was a week day afternoon it was really quiet but we were welcomed by a friendly man called Ed (i think was his name) he was a coeliac so knew all too well about special diets. He said it was the first time he'd been able to put on weight since eating the fab food at Beckhams.
They have a fantastic Gluten Free menu so I just had to check about my other intolerance's. I decided to have the fried shrimp with were served with fries. This was a light bites meal but it was huge. The Shrimps were perfectly fried, big, juicy on the inside and crispy on the outside.
You can see the gluten free menu on their website here.