Safetymom's right. You can take 192W straight to WDW from the Melbourne airport. It is a very boring ride and could be quite dangerous (the road is straight as an arrow with no shoulders) and hardly anything around. Some people drive very fast (others drive very slow) and it's hard to judge distances/speeds of oncoming cars. I've seen a few accidents. My parents live in Sebastian, a little south of Melbourne, and we've made the trip hundreds of times without incident.