The following publications resulted from this workshop:
US currency can be used at the rate of two Barbados dollars for one US dollar. There are plenty of ATM machines all over the island (including in the departure area of the airport) that have access to the major banks in North America. All major US and Canadian bank cards work fine.
Bring mosquito repellant. There are (infrequent) outbreaks of dengue fever, so check ahead of time. In the recent past, dengue has not been a problem.
There are computers on campus with access to the internet. Bellairs is fully covered by a wireless network called Bellairs or Bellair's. There is a 15USD (weekly) charge for the use of this network.
Food is not included in the room rates.
Finally, this document (PDF) contains a description of the house rules of the Institute.