This is our back road route in Florida, slightly shorter, but saves no time(adds probably 20 minutes), but roads are excellent and not much traffic. I-75 is a PAIN for traffic and DRIVERS! Well worth the reduced stress on all in the auto. We go to Disney 3-4 times a year and we live in East Texas and been season pass holders for 10 plus years.
I-10 from PCola/SpanFt to Defuniak Springs exit onto US 331 to State Road 20. Left on to State Road 20 to Bruce, Ebro, Blountstown, Hosford to Fl 267, right on 267 to Hilliardville, Wakulla Springs, Newport to US 98. Left on to US98 to Perry, right at red light in Perry on US 98 south to Cross City and Chiefland.
Left turn in Chiefland onto Alt.US 27 to Bronson, Williston, to Ocala. At Ocala right turn on into I-75 south for about 26 miles then left onto Florida Turnpike (Wildwood), stay on Turnpike to exit 267A, exit right on to Toll 429 Western Beltway to exit 8 (Western Way) back entry to WDW area. This goes takes you to Buena Vista Drive
Which joins Disney Springs to all connecting roads to resorts and parks.
This route keeps you off I-4 which can be at a complete stand still MANY times during the day (both directions). Also off I-10/I-75 which is cluster of speeding cars and trucks wanting to be in front.