I haven't been to Kirk Creek myself, but according to recreation.gov for Kirk Creek:
Each site is equipped with a table and campfire ring with grill. Vault toilets, sinks and drinking water are provided throughout the campground.
The Wawona Campground is about 5 hours drive from Kirk Creek and would be a good choice as there is a lot of sites available this March. Just go to recreation.gov to book your spot.
Wawona is within the Yosemite park boundaries and will set you up very nicely with a 1 hour drive into Yosemite Valley. You might also have some time to hang out at the Wawona Hotel or Mariposa Grove of big trees after you set up camp. The Wawona campground is pleasant with running potable water, flush toilets but no showers with some sites right by the Merced River.