The public buildings won't be churches!
They are generally local govt office blocks that are no longer used, or even schools that aren't open any more. Many are already in use.
As far as I know, nothing has been said at any point about different teachers in the afternoon.(I think practically the half and half home/online is more probable than afternoons because there wouldn't be enough teachers to cover)
Most school classrooms already have single table/desks so that won't be a huge issue- indeed much of the hoohah recently has come from the Min of Ed buying single desks (on wheels for some bizarre reason) when they weren't needed. The problem does remain that like many countries in Europe many classes are huge and classrooms are small.
Haven't heard anything about €300 towards a computer though during lockdown some schools definitely provided computers to students who didn't have them. It is the kind of throwaway comment successive govts make though which then never lead to anything.
Truth is, with a fortnight to go in some regions, and just under a month in others, nobody knows yet what will happen. The news today said everyone will be in class, everyone will wear a mask. Fact is they need to get some spaces sorted for SD to be possible. Regions do have a lot of autonomy, and so do schools, which is why there was such disparity during the online learning phase, even within the same town in some cases.
The attendance to online won't be a problem if it comes to it I don't think. The students know they got a free pass last year with nobody failing their year (which can happen, rarely, but possible) and attendance online not being compulsory (though afaik there weren't huge attendance issues) This time around it will be compulsory.
Everyone wants to be in class, the kids and the teachers. Just hoping it happens.