It is not necessary to shoot directly in sunlight, find some shade nearby. Maybe, there are some trees, a shack or a nearby restaurant, that will provide some shade. Irrespective of whom you are shooting, they will be more comfortable in shade, out of the sun glare and in lower temperatures.
You will have to keep in mind the direction from which the sunlight is falling on your subjects, are there excessive shadows below the eyes? Is the area under the chin completely dark? Feel free to use either the in-built flash or dedicated external flash unit mounted on the hot-show of the camera. [read]