Countrywife45,
I'm guessing that you're coming down I95 to I4 into WDW because of your concern about road construction in Orlando.
One alternative some folks have used is to continue south on I95 below Daytona to the Titusville area and then come west on the Hwy 528 (it is a toll road) which approaches Orlando near the Orlando Airport but you can drop down onto Hwy 417 (still toll) and make your approach into WDW that way. It adds about 15 minutes and there are a couple tolls but avoids that whole I4-through-Orlando mess.
I bet the boys would like camping at the Fort so that may be a small price to pay for peace of mind. Would beat a hotel room by miles. And if you're considering towing to WDW in the first place, this change of route should be easy to pull off.
Bama Ed
PS - btw, you win the "Coolest Internet Grandmother of the Day" award.