"Does anyone know the best way to get from FT wilderness to Yacht and Beach Club"
Realistically if your concerned about time a cab is the quickest way. I know from WLV-Yacht club it costs about $11.00 and took 10 minutes. Taking Disney transportation the previous poster covered it, but you can go to TTC-MGM or EPCOT- then catch the bus or boat to Y&BC.(MGM has the closer boat!) This could take a while depending on how you hit the bus schedule!