Dissatisfied with the final construction cleaning - am I being too picky?

With our [GU] I’m itching to get started. This will be my first review.

Tell me, can't the windows be protected beforehand (this adhesive film)? Is that more expensive than cleaning afterwards?

Our windows are also taped up. But after a while, something comes off by itself or the craftsmen have to step in or something... So the film helps but is not a guarantee for clean windows.

So double! And another bag around it. My windows are not done by the GÜ, so I have to deploy maximum protective measures. Possibly electrify it?

My windows are not installed by the GÜ, so I have to deploy maximum protective measures.

The employer of your father-in-law gives me the impression that it is not the first time they are installing windows in a new building.

Hehe, the former employer only manufactures the windows for me. I install them myself with my father-in-law and a helper.
And afterwards, there are still other trades from the general contractor involved who might know that the client did it himself, so I don't have to be careful. I am already giving some thought to how I protect that...
Proving damage caused by any other craftsmen will be difficult unless I monitor everything by video...