Mr. Branson is no dummy. You can bet any structure he has build in the hurricane zone for his personal use is very well built and designed as a duel purpose room/hurricane shelter. When you see what many of the local island population have for storm shelters I would not hesitate to ride out the storm as well. The main concern for many tourists is not surviving the storm but after the storm, how long before flights resume,and the infrastructure etc. is operating again.