I agree whole heatedly with this statement.
We made the mistake of driving back from Gatlinburg and following google maps on my phone straight through Downtown Cincinnati right in the midst of Friday rush hour this summer...I was not very happy about that one. LOL! Bumper to bumper traffic just crawling.
I'm a big fan of the bypass around Cincinnati and around Atlanta. I know there's a HOV lane that we can use, but when you're driving 90 mph and someone's right on your tail, it's a bit stressful. From now on, all our drives will bypass around Atlanta
So the route I would recommend is:
I-69 -> I-465 S -> I-74 E (into Cincinnati)
I-275 S (along west side of Cinci) to I-75 S
Follow I-75 through Lexington (you'll stay along the North and East of the city) all the way to Knoxville. Once you get to Knoxville, you'll follow I-75/640/40 west and pick up I-75 on the west side. Follow that to Chattanooga, and keep on I-75 until you hit Atlanta.
This will probably be your stopping point since you are leaving Fishers in the afternoon.
Then it's I-285 around Atlanta to I-75 again. Stay on I-75 until Macon, pick up I-475 through Macon, then I-75 all the way to the Florida Turnpike. Pay your toll ($3.00) to get on, then travel along the turnpike until you get to the Western Beltway (429), pay a second toll on 429 ($1.50) and that's all the tolls for this route. Follow 429 south to the Disney World exit (Exit 8, Western Way). Follow the signs once you are in there to your resort.
Toll Information:
Florida Turnpike Toll Information PDF
For diversions on the drive home
One of our favorite stops on the way home along I-75 is up in KY. It's the Kentucky Artisans Center in Berea. If you it it at the right time, you can get a decent fresh meal in their cafe and do some shopping for hand made crafts and foods.
Pretty neat little distraction from the driving if you ask me.
Here's a URL for their rest stop:
http://www.kentuckyartisancenter.ky.gov/
It's worth a look if you have time, or a desire to stop on your way home. Not sure if they would be open, or if you would want to burn time on your drive down though.