I would shock and balance the tub and clean the filters before leaving, just to make sure.
You could turn down the temp to save a bit, but personally for just 1 week, wouldn't think it's a major concern, and actually would rather have the tub at 101 just in case the power went out,
But I think we are splitting hairs. If your water is in decent shape and you have a 24 circ pump and ozinator, 1 week should be fine without doing anything. IMO.
oh Make sure the cover is locked.
And have fun down south.