NO. Unless you can swim and trap through a Jungle. Disney provides a Bus that will take you straight to the fornt of the Park and bring you back at the end of the day at no cost. Hope that helps answer your Question.
Not really. When you look at a map and see the 'as the crow flies' distance it might not seem too far. It's actually probably a couple of miles from resort room to park entrance. On top of that, there are no sidewalks through that area so it's not a terribly safe walk.
You can try walking, but it'd take you a lot of the day to get there. Plus, it'd be rather unsafe for you to do so. Use our transportation system. A lot safer and you don't have to wait for the parking trams or walk all the way to your car at the end of the night!