Unless it has changed there is one thing to be aware of if you are using the buses from your offsite hotel. The last time I was there (2005) there were certain times of the day when the buses did not run at all. Back then it was, if I remember correctly, between 11:30 AM and 1:30 PM. I had forgotten that little bit of information and one of the days when I found myself either extremely tired or mildly ill, (don't remember which) I wanted to return to my hotel for a little rest time. Guess what? No buses. I stayed only about a half a mile away so I decided to walk. Well, the temperature that day had hit a record high for that time of year. It was 106 degrees. A main contributor to my fatigue, I think.
By the time I got back to my room I was literally exhausted. Moral of the story...plan around the buses at DL.