One obvious benefit of warrior diet is that it gives the digestive system a long rest which can help rebuild itself and remove toxins.
It also means that it allows pancreatic enzymes to play its role in cleaning up the blood (eating high sugars, cooked food a few times a day will consume most of these resources and prevents the enzymes from fulfilling all their functions - as per dr kelley).
It certainly may be acceptable to have a snack during the day if necessary like a piece of fruit or raw veggie as these should not hold up the digestive system too long.