Vacations are among the most stressful things possible, especially with kids.
If you need a vacation from a vacation, go to a park or field or camp ground. Do it in the morning before the world is really waking up, and just listen to the birds and watch the mist burn off with the morning sun. 30 minutes of this while quietly walking will do wonders for you, from your blood pressure to countering cortisol and all of the stress hormones in your system.
30 minutes of quiet time like this has been proven to be as effective as almost 3x that amount of time of sleep, will improve your productivity, and make it so that you don’t kill someone and bury their body in the woods.