Hi folks.
I spent some 20 odd years as a wedding photographer, after navigating a City & Guilds in general professional photography back in the 'wet process' days. As others have said, not a genre that allows screw ups. I stuck rigidly to the mantra of 'repeatability', carrying out pre-job checks and equipment packing exactly the same way, each time, every time. Exposure measurements and camera operation (Mamiya RB67) were also uniform, exposure to exposure, job to job. That way, anything going awry was easy to spot immediately. It was 'manual operation only' all the way.