Great location!
King’s Canyon is equally amazing, but much less crowded, than Yosemite Valley. We visited on the Sun/Mon after July 4th, and although this campground was almost full, the others in the canyon were completely empty the entire time. Leaving us the run of the park when it came to visiting sites and hiking.
Although everyone should visit the Yosemite Valley at least once, Kings Canyon would be my multi-day choice a second time around for sure. Crystal clear waters, scenic hiking and stunning waterfalls.
Campsites are typical national park style, with minimal ground cover and no firewood to collect. It should go without saying that this is an active bear area, and all rules apply.
Services are very limited after dark throughout the Sierra Nevada park systems, and the remote location makes modern amenities hard to come by. Bring anything you think you may need.
Basic bathrooms, no showers. Small store/rangers office and maybe a small eatery open in peak season throughout the day.