Have a rental car during your vacation at WDW - we would never do without. WL is so close but yet so far from GF using WDW transportation (I bet it would take you at least 20+ minutes and it is probably less than a mile away). With a car it is 5 minutes tops!
We just got back from the CR and it was quicker to get to breakfast at the GF using the car than it was using the monrail - only 3 stops away.