Good grief, soon to be a month away, as you say.
I don't think it is a bad thing to visualise results day. G.C.S.E results day I did, and DD and I agreed that she would walk to school - (calming and not far away) but then two parents of another child interfered and insisted on giving her a lift, which made the whole thing more stressful!
Plus one thing to be aware of is people filming!
I was really annoyed that mates of DD had filmed her getting an offer from one uni and it was posted on the college website. Yes, DD was happy about the offer, but that was six months before the exams and we didn't need the extra pressure of other people discussing it before it had happened!
Filming I don't agree with, as there will be some really happy bunnies on results day, but should things turn out differently than expected, I feel young people with either scenario (and their parents) may need some private time to process!
Others may disagree, but it is not a spectator sport!