You don't need to see their skinny legs. So instead of lining them up from here to Timbuktu, break them into shorter lines, one behind the other. Make your pictures different. Take some of the kids posed in front of a colorful background. Then get some candid shots of them playing with the animals in the petting zoo.
Colorful crowds can be fun.
But they make a horrible background for a picture of Timmy in his new MGM sweatshirt. Look for a simple, uncluttered background so that Timmy won't be lost in a sea of strangers. Shift your position slightly, so the sun is coming over their shoulders instead. The settings are great just be sure to leave out the sign telling you to take a picture there. It's fully waterproof and can even take pictures underwater.