老许, the situation is badly handled. The kids do not queue up to receive food. The big ones will always fight and get food first. You should be the person receiving the plates of rice and handling to the little girls and boys first, and then to the bigger girls and boys. Leaving it to the rice seller, he will simply give to the big boys.
老许 cannot give them because when they know you are not an Afghan they just grab the plate off him. That's why he told his driver to give at the beginning.