Wow...I should read what they send me...thank you.
Here it is!
arking: Complimentary parking at Magic Kingdom® Theme Park will be available beginning at 5:30 PM. You must present your Member ID and a hard or digital copy of this confirmation email at the parking toll booth. The Resort monorail will close at 1:30 AM.
The ferry is very easy, especially if staying in a lake view room. The monorail broke down, while leaving the MK, when I had my mom in a wheelchair. Easy alternative. And we ended up taking it again.
The Polynesian is great for transportation in general but absolutely fantastic for those with disabilities. (Shouldn't speak for everyone but I felt that I couldn't have chosen better for my mother.)
The only possible frustration, for ECVs and larger wheelchairs, are the small elevators.
I've rented the bigger unit from Best Price mobility which isn't foldable, this was for my father who needs an ECV to get around WDW. We used the buses and monorail. Unfortunately I don't have any experience with the break-down on this unit to give you a precise idea of the ease of use on it to get it into a vehicle.