I only recently started restricting activities because I can no longer get everyone where they need to be and pick them up and make sure they're prepared. Once they're in High School, most activities are organized through the school, but there's still transport requirements.

Aside from hating running around and always barking at the kids, "hurry up, get in the car!", fast food dinners, DH and I go to bed EARLY. We always have. Usually about 9:30-10 pm. I am finding some of the activities are going very late (Basketball games and practices encroach on my pajama time).
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