My family has stayed at Fort Wilderness several times. We have a Class C motorhome and usually bring along our bicycles as in resort transportation.
We have pets as well, so we usually end up in the 300 loop which isn't too far from the Settlement Outpost/water craft/beach area.
So for us it's very easy to get to MK, 3 minute bicycle ride to the beach and then less than 15 minute boat ride (green flag) to the front gates of the park. We've never had to wait more than 20 minutes for this boat. For the other parks, we ride our bikes down to the front entrance and catch a bus. Also, if you're not in a rush, you can do the scenic route to get to Epcot. We ride our bikes to the boat launch, catch a boat to the Contemporary resort and then take the monorail to Epcot.
I love the facilities at Fort Wilderness, it's probably my favorite campground on earth. I've stayed at swankier RV resorts, but WDW is just the tops for charm, cleanliness, privacy, etc.
I find the restrooms clean and spacious. The sites are enormous with tons of greenery and trees for privacy. The hookups are well-maintained with level concrete pads. The only drawback is they are all back-in spots, no pull-thrus. The Meadow swimming pool is very nice with a snack bar and splash area for little kids. I love breakfasts at the Trails End Restaurant, it's a buffet with great options and I've never had to wait more than 5 minutes to be seated. There's a short bicycle path to Wilderness Lodge, it's a pleasant ride on a no park day.
The entertainment is top notch with Mickey's Backyard BBQ and the Hoop Dee Doo Revue. Both are so much fun, but the food is better at the revue.
Any other questions?