We do the 81/77 route all the time and prefer it to I-95 through NJ, Baltimore and Washington by a lot. As diversions, we sometimes cut over to 29 Around Elkton and pick up 52 between Greensboro and Charlotte. South of Columbia, we usually take 321 and pick up 95 just north of Savannah.
You are not picking the best time of year for Ft. Wilderness as it is going to be very hot and crowded at Disney in the Summer.
John & Nancy
Jay Feather 25Z 2007
Ford F-150 XLT 5.4 Triton 2008