WL/SL is next to Blizzard Beach. So if you go when Blizzard Beach is open, take the Blizzard Beach Bus and tell the driver you want to go to the golf course.
Fantasia is next to the Swan. So, if you are at a non Epcot resort, take the bus to MGM and then walk or take the boat to the Swan, walk through the Swan across the street to the golf course.
If you are at an Epcot resort, talk or take the boat to the Swan.