Rhiansmom- The walkway from SOG to the POLY is basically a sidewalk running along the driveway of SOG. You can't miss it. When you get to the end of the SOG driveway, the POLY is across the street. The walk is not bad (about 10 minutes). The resort monorail runs from POLY to GF to MK etc. I suppose you could walk all the way to the GF. I would guess it would be an additional 10 minutes.
Sometimes you can catch a ride on a golf cart (the shady shuttle) from SOG down the walkway to the end of the driveway. It is not a scheduled thing. If the gold cart is in front of the hotel when you walk out just ask the driver for a ride to the poly. We gave the driver a few bucks tip.
To get back to SOG from GF you could 1) walk, 2) take monorail 4 stops to POLY and walk, 3) take monorail to TTC and catch SOG bus, 4) take a cab from GF to SOG.
Will you have a car? If you have a PS at the GF you should be able to drive to the GF and park.