Been numerous times to this convention (as a pro and as a visitor).
Most of the publisher booths are from French publishers. Panels, activities are in French and speakers are in French. Some panels don't really require to understand French though (cosplay).
Some video projections are in English but it is rare.
Most of the booths will speak English, but it ...
I have not attended previous meetings of this convention, but I can tell from my professional knowledge that:
It is the largest in all Europe.
Many of the guests come from Japan.
This convention is considered a professional meeting point in the world of manga/anime, and as far as I know from my colleagues who have attended, all the meetings are in English.
You can buy digital version of Bleach on a per-volume basis.
According to Viz Media's site, digital versions should be avaible from:
I'm not sure about the region restrictions of these though, as you are living in Norway - Viz may not have the licensing rights for the regions (They usually prioritize the US first). ...