For clarification purposes, are you asking whether Southern Hospitality is the result of the South losing the Civil War, and their subsequent occupation by the North -- necessitating the boarding of Northern soldiers in Southern homes?

I don't understand the question, but the North held the most southern point in the United States (Key West) for the entire war. They also captured New Orleans and Atlanta, so they very much went south. I guess clarify if you mean before or after the war.