Unfortunately, the captain told me that it was too windy to make the 70-mile round trip journey and to come back again tomorrow morning. I was too awake to go back to bed, so I decided to sit out on my hotel's dock and watch the sunrise.
I thought the room was so cheap just because it was terrible. But that night I also learned that the discount was also due to the fact that the room is twenty feet away from the island's only MEGA CLUB that plays insanely loud reggaeton music (played over a PA, inside a rectangular building entirely constructed of corrugated sheet metal - like it was MEANT to be heard) until 2am every night. (I'm laughing as I type this because I remember myself laying in bed that night reggaeton-dancing-myself to sleep to the bed-rattling beat.)
I found a beach-side restaurant near the airport and had some lunch, then walked around looking for a room. Found a place on the beach for $80 USD a night which was more than I wanted to spend.