british billionaire adventurer sir richard branson stay private caribbean island necker potentially devastate arrival hurricane irma founder virgin group company say tuesday pack 185 mph 295 kph wind hurricane irma due reach british virgin islands wednesday grind west across haiti cuba head southern unite state storm classify category hurricane high level scale use national hurricane center measure strength lovely guests stay necker island cut trip short safety reason another group guests also postpone branson say statement virgin group website necker alongside team three time hurricanes past 30 years necker large main house several small balinese-style house accommodate 34 people total rent private group 80,000 night accord website island 100 staff two infinity pool branson say necker boast really strong build hurricane blind able handle extreme weather pretty well say main concern british virgin islanders make prepare possible whatever happen keep inside away ocean away fly debris branson write recall see two powerful hurricanes earl otto strike british virgin islands 2010 branson say behold nature ferocious note damage do texas louisiana hurricane harvey come ashore second-strongest category storm destroy thousands home businesses kill estimate 60 people displace million harvey tragic costly reminder society enough tackle climate change branson write irma indication must brace catastrophic weather events billionaire branson ride hurricane irma necker island