Hello,
If we are missing a railing, everything is still possible on the wall. Basically, my wife and I walk up there. Small children are not in sight for the time being. The staircase is 1m wide, so a railing to be installed later would always be feasible. Or a lift in 25 years, or, or.....
After it was a bit quieter around Easter on our construction site, things are moving forward again now. Since yesterday the windows are installed and next week the electrician will start.