Stayed in mid-June when Yellowstone and Teton were brimming with tourists. We had booked a back-up RV spot near the south entrance to Teton, but after looking at it just filled our water there and left (it was basically an open field with 50 of your not best friends in RV's blasting music). Took a chance on Pacific Creek. All of the dispersed camping was taken, but the campground itself, which is at the end of the road, was about empty. For $10 we got a spacious site, table and fire ring. Water was available as were pit toilets. Looks like a great equestrian campground and we saw a few parties with horses. Make sure you make use of the bear boxes, as we saw plenty of bear prints and other sign within 200 yards of our site. Lovely trails leave right from here. The camp host is a Swiss ex-musician and all around nice guy.