Don't know when you are going to be at WDW. But BB will be closing in the next week or so, meaning that there will be no direct buses to BB from OKW. The only way to get to WSL when BB is shut down or after BB hours is to go to EPCOT and get on the CSR bus. When returning you will have to go back to EPCOT and transfer to your bus.
While staying at OKW the easiest way to get to Fantasia Golf from OKW is to take a bus to DTD and then transfer to a bus for the Swan. You could also take a bus to HS and then take a boat to the Swan.