The law doesn't take effect until October. Even if it did, my interpretation of it is that you're good to go on 2 fronts. First, the beach itself is public real estate and you'll be fine on that front. Second, the law is pretty vague in the area of private real estate within 25 miles of the United States border (which is permitted). The law does not define what the border is. Under maritime law, the border is the low water mark so I imagine there is going to be some litigation over that in the future to clear it up. As a general rule, if a person being filmed by a drone would have an expectation of privacy (like in an outside shower that wasn't covered by a roof but is covered on all 4 sides surrounding it), you'll have a problem and might also be violating Florida's voyeurism law which is pretty tough and calls for jail. However, if you're just taking pictures and videos of the beach and unique architecture that is open to the public, you'll be fine. I flew my phantom a few weeks ago at Seaside which is only a few miles east of Destin and had no problems. I highly recommend you go over there while you are here. The town itself is really picturesque. It's where the movie "The Truman Show" was filmed. There are also several beaches that are not very populated on the outskirts of Destin such as Grayton Beach and Topsail and you shouldn't have any problems there.
