We are former Northeners. We moved down here back in 2004 between two really bad hurricanes and lived at WDW for a week each time.
We didn't evacuate because we have pretty much fortified our home and my husband was on call. During evacuations, traffic jams are a constant and it often takes hours to move just a little. I did want to deal with that. We live inland and were not under mandatory evacuation orders. We definitely would have evacuated if we lived on the island.
You just never know with these storms. Our next door neighbor did nothing to prepare and her house is just fine.
Most of our friends have power which is really surprising.