Ditto: ... if you bring a cart, it won't be allowed on the island unless you have a vehicle importation permit issued by the San Pedro Town Board. I was at the traffic department this morning to check on the status of a golf cart permit for my brother-in-law. The application was denied because he does not hold a Belizean drivers license. That was not a requirement when we got our permit, but things change quickly.
Bottom line, I wouldn't bring a cart down unless you are prepared to store it somewhere on the mainland while you wait for the required permit to bring it to the island.