K.M.
Oh! What fun you'll have! It's so very beautiful there, just be aware of some of the costs (because things in Jackson Hole can be pricey if you're not careful). However, if you're willing to spend some money, I HIGHLY recommend going on a covered wagon trip! My mom took my sister and me on a trip there when we were younger and it still ranks as one of my all-time favorite vacations! We traveled across the countryside by covered wagon or horseback each day to our camp where we could hike, explore, and sometimes swim. The food was amazing as were the campfire stories and music. They really made us feel like we had stepped back in time. This is the trip that we took:
However, they also have day trips which would be almost as exciting and are definitely more affordable:
Have fun!!