having worked at boarding kennels, it is my opinion that there is no excuse for the dogs leaving in this condition. i have worked at kennels that held over 150 dogs, and each one got proper care. if they were not eating, the owners were notified if possible, and we did everything possible to encourage them to eat.
if we had the owner's permission, we mixed in canned food (if they were eating kibble), or even cheese, yogurt, meat if allowed to. if necessary we would sit with the dog while he ate, or even hand feed if it helped. some dogs however simply would not eat no matter what, and the owner's were informed of this and it was suggested that they either supply something more enticing or use a pet sitter.
if the dogs were picked up a day early, the bath and nail trim would not have been done, but it would have been mentioned up front at the checkout, and the cost either refunded or a credit given. also any dog who wasn't clean at time of pickup would be quickly spot cleaned. i never let a dog leave the kennel dirty.
however, having worked at many boarding kennels, i am reluctant to board my dogs.