Oh yeah, I guess I didn't take into consideration too much the letter that Lulu got...

I'd call her coordinator Lulu, and see what they think about her going or staying. If you chat to them, and they think there's not a whole lot of point in her going, especially if she has alternative plans, then at least you can have a bit of peace about her staying away.

I have no idea, but I wonder if the letter isn't because kids don't attend school in that week, but meet in front of the school and take off from there (as in, don't stay home, but all hang out together), and perhaps cause trouble, or don't tell their parents they're not attending...that kind of thing. I know there used to be more kids at the movies, shopping centres, parks, lakes, just hanging out in those weeks.
Okay, definitely bed.