Others have mentioned some of these already, but here are some of my favorites:
1. Sitting at Geyser Point at WL, enjoying the food and, especially, the view.
2. Sitting outside the Polynesian with a drink listening to the calypso music.
3. Walking around the various viewing spots at AKL, which I'll be doing a lot next week!
4. Sitting on the porch of the BWI with a good book and taking all of the area in.
5. Walking around the Port Orleans Resort, especially in the morning.
6. Shopping at the Contemporary.
7. Boat rides to anywhere from the Wilderness Lodge.