Just back from 7 days in Jackson (9-25 to 10-3) to see the fall leaves and the wildlife.
Grand Teton National Park is a splendid place to visit. The roads in and next to the park offer many opportunities to see Buffalo, Bald Eagles, Antelope, Moose, Bear, Elk and more.
Restaurants and lodging in Jackson was great. We took an early morning balloon ride from Wyoming Ballooning which was very enjoyable with a nice view of the Teton Range.
What was really a nice surprise was how many trees were brilliant yellow - Aspens, Willow and Cottonwood. Morning lows were in the high 20s, but 1 pm it was 75 degrees. Nice hiking weather.