We also stayed at Curt Gowdy SP west of Cheyenne, a very nice stay. Then went to Thermopolis for a night, stay at Eagle RV Park, nice and shaded w/good wifi. Then in Cody we stayed at Buffallo Bill SP just west of town, on the lake with pretty open scenery but was very windy. Dont miss the BB Cody Museum, well worth the day spent there. Of course you have to stay long enough to go through Yellowstone! We drove through the park from the east side pulling the trailer, which wasn't bad. If you don't mind being packed in, stay at Fishing Bridge CG if you want hook-ups. We stayed in West Yellowstone, MT and drove in to the park each day and took a different route. Do not miss the Grand Canyon of Yellowstone, or Old Faithful if you only stay 2 days. The Tetons are majestic, you have to see thoses! We stayed in Jackson Hole at the Virginian RV park, but Colter Bay is a nice park with hook-ups or, when we go again we will dry camp at Gro Ventres CG which is more secluded but see more wildlife there. Dont miss a day trip to Jenny Lake, boat ride, then hiking the trails around and back down. The town of Jackson Hole is a fun place to see for a day also. From there, we went south to Moab, Utah to see Arches NP, if you go that far south. It will be a great adventure! See all you can, and make a reservation way ahead to stay in Yellowstone and at Teton.