Simon and Cindy .. good for you guys ..you'll have a blast .. you will SAVE a considerable amount of money by converting and making most of your purchases with Jamaican currency .. always a good idea to memorize the exchange rate... as it stands now you can almost treat every 100 Jamaican dollars as 1 CAN or US dollars .. Of course larger purchases such as transportation and tours will do well with Canadian or USF's .
Negril/Jamaica is not dirt cheap .. be prepared to pay Canadian like prices during your stay...ENJOY !!!! and remember ..NEVER change funds on the street .. my practice is to use an ATM every few days so as not to be burdened worrying about too much cash ..the scotiabank ATMS will dispense both/either Jamacain and USF's