Ironically with Bertha. The phone system worked. The owner of the villa tried to get on island. Made it to Florida but couldn't get any farther. So I kept him apprised of the state of the villa. As I had much time on my hands I did alot of cleaning up ( got me a free week stay next trip) Also in his utility room he had a fridge full of Heineken. I save them from getting hot. Breakfast, lunch, dinner of champions ( so they say).
Also even if the airport has generators that doesn't mean that the reservations systems will be working.