It's been a long time for me, but in the US I recall that it covers part of June, July and August — so that has to be at least over 8 weeks. Although maybe the idea that our kids get a longer Summer break is part of the the anti-vacation propaganda?
Yes, and? Are five weeks no vacation or what? This is what you said (just to remind you): “[We] have Summer vacation for schools (unlike the rest of the world).”