Shooting in the middle of the day with those harsh shadows that come with the sun is never easy. Although there are many tips out there for shooting in the harsh sunlight, here's one that will help drastically if you're strapped for time.
Use the natural elements around you. For the family shoot I had in the following images; I had to try to balance out making the kids pay attention and laugh, and get that perfect exposure on their faces.
I was able to use the large trees around us as a sun blocker while still being able to get the mountains in the background. The other advantage is that because I was shooting against the sun, the family was turned away from it. Allowing the children to be squint free in the photos!