So here's a photography tip when taking photos of four kids with no parental supervision (i.e. babies, toddlers and pre-schoolers each running around doing their own thing). Stuff all four kids into a small pack and play and snap away. It's also a great way to have five minutes to yourself - not that I needed it or anything.
For whatever reasons, the kids thought it'd be fun to use their feet to block the camera. It's super fun trying to achieve focus using a wide angle lens with feet kicking wildly within inches of my face. Another tip - set the focus point on the mellowest, read, immobile child.