I arrived here today on AA flight from DFW. The cost of the taxi to my hotel (Radisson Hotel) or to the city is US$25 or BZ$50 per trip for up to 4 passengers. If you are staying at Radisson, which I later found out from the taxi driver, the hotel has a van, in which guests are charged $US13 per person. Also, the taxi driver said that visitors needs to travel to the city by taxi to catch the water taxi not unless there is a pre-arranged transportation from the airport to the city. I am not sure if these info were already posted here but I find them helpful for future travelers.
For my hotel stay, as a Silver Elite of Radisson's PPS program, I was upgraded to a Junior Suite. Check my earlier post for info on how to become a Silver Elte of PPS.