What I would still be interested in… how does the installation actually work then? I mean… is that also taken care of by them or do we have to handle it ourselves?
You can choose. From Guardi, I know that you can have the fence installed, but you don't have to. It depends on how handy you are and how much time and willingness you have yourself.
There is no such obligation here, as long as no danger arises (dog etc.).
There is no obligation here either, but my dog actually doesn't get along well with the neighbor's dogs, so a fence simply makes sense. It's also more pleasant for us humans than having to keep the dog on a leash often in our own garden during the summer.