My neighbour has two daughters (late teens). A couple of times this week, the girls have come home late (after midnight), getting dropped off in cars, and they sit outside for about an hour with the engines running, windows down, laughing between the cars and being just a bit giddy and loud. But this is right outside my window, and my son's. And on week nights, when we both have to get up before 7. Because it's summer and very close, we sleep with windows open. I am really finding it very hard to sleep with shrill voices outside to all hours. AIBU and a total misery, or is this a no-no on a school night?