While there may be some die-hards who will snipe at the Yankees, absent an organized movement like Mosby's, they will be few in number. While "bubba" may want to "git" some Yankees, when the result will not just be his death but at a minimum the destruction of his home and his family destitute and starving with no roof over their head (and no "system" to help them), his ardor will cool. If this does not happen, hostages WILL be taken and that will be a deterrent. Remember that even ITTL those locals who keep their nose clean & go about their business will be pretty much left alone. Sure their will be some foraging, and forced purchase of supplies, but the local store owner, farmer, miller, etc can carry on fairly well IF they just get along to go along.
Emancipation will be less of a hassle for most than many believe, only 25% of Southern households owned slaves, and most of those owned a handful at most so the "cost" of emancipation for an individual household will be small to zero.
Don't forget that in Tennessee that the eastern party of the state was heavily pro-Union, and the local Unionists will be able to suppress any CSA guerrillas with minimal assistance. The western part of the state will have a heavy Union presence (both army and navy) so brigandage there can be contained pretty well.
OTL "resistance/guerrilla" movements only gain adherents willing to risk all when there is visible outside support against the invader/occupier or a reasonably "popular" revolutionary movement AND there is hope of victory. In spite of popular mythology resistance movements in WW2 (like France, Philippines) took off once there was faith in victory, relatively small numbers until then. ITTL it should be clear to the southerners in Union "occupied" territory that the tide is against them big time.
Finally, remember that the "Yankees" may not be liked or always polite but they are not Nazis.....