Manda, if you plan on using your ATM or VISA cards in Jamaica but sure to call the numbers on the back of the cards and tell them where you are going and for how long. The cards may be refused if you don't. I bank here with Scotia and always let them know. It has not been a problem. I also take US for the hotel and ride to Negril but use Travellers Cheques in CDN which are easy to exchange at any cambio (faster then the bank). You will need your passport when cashing them as proof of identity.

I prefer using Jamaican dollars and it's easy to get used to them.