What currency is used in The Bahamas? 
The Bahamas has its own currency, but US currency is widely circulated. 

What is the rate of exchange between the US dollar and the Bahamian dollar? 
The Bahamian dollar is on par with the US dollar.

What are the banking hours in Grand Bahama Island? 
Banks are open from 9:30 a.m. to 3:00 p.m., Monday through Thursday, and 9:30 a.m. to 5:00 p.m. on Friday. 

Are there any ATMs in Grand Bahama Island? 
An ATM, operated by The Bank of Nova Scotia is located in the Casino at Bahamia; funds are given in U.S. currency.  It accepts VISA, MasterCard, American Express cards, and any other bank or credit card on the Cirrus, Honor, and Novus networks.