Airbnbs are allowed to take reservations beginning May 1. I have an Airbnb credit from a trip in March that I cancelled due to this whole situation. The Airbnb owner says that she'll gladly book me. Dive shops/charters are reopening May 1.
The main thing holding me back at the moment is that the beaches at Jupiter are still closed. My Airbnb is just a block away from the beach, and I'd be going with my daughter, for whom the beach is a principal attraction. Not worth going if she can't even put a toe in the sand. Hopefully beaches reopen soon, even if it's just to walk/run/swim in the ocean.