We are worried about that too. Not sure what else we can do as we booked our airfare and boat thinking the date of the race was the sunday as it had been and was on the website and then they changed it to the following sunday and then back to saturday so we were scrambling. Ideally we wanted to get there two days ahead, but that will not happen. There are a lot of balls in Francis, Maho and Cinnamon so hopefully it will all work out. Was reading somewhere (maybe here on Traveltalk) that if all balls are filled you can anchor behind the mooring field, but that was news to me. We can be in touch like you said as the event gets closer. So hoping we don't get snow this week (we live in MD and see you are in VA).
Jane