We have been flying since 1986. We stay at least 3 months , but have stayed longer. Never have we been asked for a return ticket. And of late, we do not book the return right away. We believe that because we own a home on Island, they will be lenient. If they allowed us to build on the Island, then they need to respect that we need to be there more than 90 days at times. I think this only applys to visitors and not owners. Never had a problem and been told we would not.