I guess all things are grand in Grand Teton NP, this campground is enormous! 350 sItes! This was a spontaneous trip into the park, at the entrance it shows which campgrounds inside the park still have sites available. The ranger suggested Colter Bay as his favorite with availability. It was an hour and half drive from the southern most entrance be Teton Village. I arrived at the queue line to get a site just after 8 pm. I was able to snag the second to last site available! It was an RV site, but had a nice tent pad as well. Generators are required to be off at 8 pm so I didn’t experience what it was like with all the generators running in this area. The sites are roomy for being so many. There are bear boxes for food storage, fire pit with grill, and a picnic table available at each site. Each loop has 1-2 restroom facilities available that have flush toilets and a wash area available.
Outside the campground there is a full service restaurant and grocery store. The pay showers and laundry are right next to the market, less than a half mile from camp. There is also a gas station where you enter the Colter Bay Area.

Activities galore! I had my mountain bike with me and had planned on biking some of the many trails but they are foot traffic only. You can bike in the park on paved trails. They discourage trail running because it could aggravate a bear if encountered. They have boat rentals at the marina I was going to rent a kayak for a quick morning paddle, but they have a 2 hour minimum and I didn’t want to pay $50 for 1 hour use.