make your reservations in Yellowstone as EARLY as you can because it's a very busy park. I recommend Bridge Bay campground because it's located well for touring. The park roads form a figure 8. you can do the north loop in one day and the south loop in a day, but 2 days each would be better.
plan on visiting Old Faithful around your lunch time and eat at the Buffet in the Snow Lodge while you're waiting for the geyser to make its show.
Over near Bridge Bay is the Yellowstone Lake hotel and lodge..across the road and a couple miles away...and the Lodge also has a decent buffet with a great view of the lake, etc.
For Teton National Park, make a reservation at Colter Bay campground...or go all the way down to the other end of the park and stay at Gros Ventre campground. Both are nice.
As stated, go south from Jackson to Alpine, then over to Idaho Falls and on toward WA.
