Bring along a passport, because you will need it to re-enter the United States.
Purchase up to $600 worth of duty free items. However, alcohol purchase is limited to no more than two liters, for those 21 and older.
Be prepared to drive on the let side of the road (like in England).
Visit the Bahamas during the peak season, which is November through April, for the best weather. Avoid October and September, which is hurricane season.
Plan to wear a helmet, which is required by law, if renting a motor scooter.
Remember that a 15% gratuity is added to all beverage and food bills in all restaurants and hotels. You can always add more if you find the service stellar.
Obtain a permit for your pets if you are traveling with them. The $10 permit is valid on pets six months and older.