This is a versatile soup. You can used cooked turkey instead of chicken. How about roasted curry spiced chickpeas as a garnish? Or take an apple, dice it into 1/4" squares and saute in a pan with some butter until browned on all sides, and garnish with this alternative crouton!
If there are only 4 of you at home, this will definitely give you an entire second meal. This is why it is good to make up the soup, and cook the rice separately. This way you can make more rice the second day (as opposed to having it sit in the soup and making it thicker overnight.)
If there are just two of you, cut the recipe in half. You'll still have plenty for the next day.
This will keep as long as you don't add the rice to the soup. Refrigerate in separate containers. Adapted from Cooks Illustrated