Welcome to the community freemartin My sense from what people posted previously is that primary entry will get you in that front section, but only if you don’t wait all day to enter. Once it fills up, it fills up. I would guess the section will take at least a couple hours to completely fill up...but it’ll be my first time at the venue too.
I'm also worried because I'm in the same boat as you are. I'm Polish and won't get my ticket delivered to my door either. I'm also thinking about being there earlier to collect it on Friday not to be stressed so much. And my ticket is also a Primary Entry one. I think the best thing we can do is to gather us all in one place and wait in the queue together. It will be much less stressful and for sure much more pleasant. We have six months ahead of us and I'm sure that if only that idea pleases all people from the forum we will be able to do all necessary arrangements.