When we stayed at Mont Vernon in February and March, I would estimate 80% of the units were occupied. The units without the ocean view were occupied by individuals or families who worked on the island. Some were there as they waited for their homes, damaged in the hurricane, to be repaired.
The holiday visitors rent the units on the front with Ocean and beach views. Since the pool was damaged, we and others would walk down the beach for the day or go elsewhere on the island and for some of us, meet on the beach before the sun set. The wind during that time was quite high and made the water at the north end of the beach rough. Without the pool, chairs and other facilities, there were not crowds of people.
The first things to be repaired was the pool and the units at the front whose roofs were blown off. These units had a lofted ceiling that did not have the concrete roofs which had the decorative roofs blown off.
If parking and cars are an indication of occupancy, the parking lots were full.