X2 on the Ponderosa Campground for Cody. It's within walking distance of the Buffalo Bill Historical Center, about 5-6 blocks. As a heads up, the last time we stayed at the Pondersoa, they didn't take credit cards, just cash and checks.
There are two other private campgrounds several miles away on the east side of town and Buffalo Bill State Park campground on the reservoir about 5-7 miles west of town. Stock up at the WalMart on the west side of town before heading for the higher prices and less selection in Yellowstone.
Another X2 for the Gros Ventre Campground, our favorite for the Tetons. In addition to the water & dump at the entrance, there is now one loop with electric hookups. Don't know whether the Colter Bay Campground has an electric loop as we have only stayed there a few times. If you need FHU, Colter Bay RV Park is the best choice, but you need to reserve ahead.
If you need to restock while in the Tetons, there are two full size supermarkets at the southern end of Jackson, an Albertsons on the left and a Smiths on the right a mile or so further south.
