If you are coming down I-95 from points north, you will get off onto I-4 10 miles or more north of where the fires are causing on and off closings of I-95.
If you are coming from the South (Vero/Miami), you can take the Turnpike and completely avoid any fires.
If you are coming from the North West down I-75, the fire that was burning out there yesterday in Hillsborough County was south of where you would get onto the FL Turnpike by at least 15+ miles, so no impact.
If you are coming from the South West, you will get onto I-4 near Tampa, a good 15 miles south of where the I-75 fires were.
The fire by Sea World is out. The fire at Universal was not a brush fire, but rather a fire on their fireworks trucks.
If you are coming from Hillsborough, Brevard, or Volusia counties, I'm assuming you are local or visitng someone local, and thus either know or can get directions to avoid any potentially troublesome areas.
THERE ARE NO AREAS THAT "NON-LOCALS" WILL NEED TO DRIVE THROUGH TO GET TO WDW THAT ARE AFFECTED BY THE BRUSH FIRES.
Anne