Hi Mel,
It's not that far, its right across the street behind DCA. You should be able to see it from the Hotel. Bob can get there two ways if walking. One would be to go out the Front entrance and walk out to the street. Turn left walk the length of DCA, to Katella, and cross the street. Then you turn Left again and it's about halfway down the street.
The other way is a bit more trouble, but probably a little bit less walking either walk through DTD, or DCA (if open) walk to the other side of the entrance plaza, jump on the tram to the Lion King parking and get off at the first stop. Then walk out the back gate across the street and you're there.
You can also take a cab, but I would expect with traffic and such travel time probably won't be much different than walking.