We always drive to WDW but once we get there -- I park our van and let Disney do the driving!
It gives me a break and the accessibility is good.
Sometimes you might just miss a bus and have to wait however that is less stressful than the times I have decided to drive somewhere.
I have a hard time around WDW and always seem to get lost or head the wrong way. I find the signs don't give enough warning and suddenly I missed my turn! This is during the daytime too! I can't imagine driving home after the evening shows, tired, and with traffic! I definetly vote for riding the buses!
Linda