Fruit bats in Roatan, like many other places, are known to be attracted to sweet substances.
If you place a bowl of sugar water outside at night, you may indeed observe these bats coming to drink.
This behavior is quite common among fruit bats, which have a diet that primarily consists of fruits, nectar, and sometimes flowers.
The sugar water simulates the sweet nectar they would find in flowers, making it an attractive source of nutrition for them.