Some additional thoughts while reading, just for discussion.
I think I was a little confused by the title and questions for this reason: I always learned that there are three modes on a manual camera. 1) Full Auto - camera picks all settings, 2) Semi-Auto (Aperture and Shutter Priorities and Program modes, where you pick the one most important to you and the others fall into place although you can adjust the ISO with either), and Full Manual - you pick all your settings. I remember a time when people were buying manual cameras but keeping them on full Auto all the time. That’s what happened in my “professional photographer” example - she was using Full Auto all the time and didn’t understand how to use semi-auto modes, which I was trying to learn myself at the time. I think it takes some work to use the Semi-Auto modes because you have to understand both your camera and the Exposure Triangle in order to get the kinds of shots you want (indoor sports or shows always being a challenge to practically everyone new at it, and then some).
That being said…
As I was responding to several posts in my thread Balancing Vacation and Photography,I read that some photographers are quick when it comes to taking pictures down in Disney World. This got me thinking about how can they be so quick at it? As photographers, we practice and get good at it, but sometimes the scene changes quickly which makes us change quickly. So think
makes me want to ask the question:
As has been mentioned, practice, practice, practice enables one to become intuitive, and that makes it easier to know which settings you want, on the fly. I mentioned how a wedding photographer may carry multiple cameras, that’s because they can’t afford to miss a shot futzing around with lenses and settings, and also why many people won’t do weddings even when asked because there’s too much at stake for all but the most accomplished photographers who know they can get what they want out of the camera in a split second. Kids’ sports and recitals (and certainly the parks and resorts) aren’t as critical, so we might have more time and less pressure to get the kinds of shots we want when we’re adjusting to try to figure out what works best given the shooting conditions at any given time.
Do you use full manual or one of the program modes when down in Disney World? When I shoot dance or theater photography I use shutter priority. Because things happen quickly, especially in dance, shutter priority allows me to set the shutter speed at a speed I know I can capture the action without it being blurry. But in shutter priority, I can add in some exposure compensation for when the lights are low. Shutter priority also allows me to not have to think about one part of the exposure triangle. When I do shoot in full manual, I have a few "go to" settings, but was curious how other photographers do it. So which do you use, and would you be willing to share some tips?
Exactly. When I had time on my hands I enjoyed shooting in Full Manual because I could use my histogram to help me figure out which settings were working, and which weren’t. But then I often found that I may not be getting the kinds of shots I liked best, which were the ones with the bokeh

(as I’ve mentioned before, I really love, and it’s probably part of what got me into this in the first place) so that’s how I figured out that Aperture Priority usually works best for me - unless I needed speed or wanted trail effects like with fireworks or waterfalls, etc. A lot of people like Program Mode but that wasn’t one I used often.
ETA Putting this here as it may be helpful:
I hope this helps. In many ways I am still learning myself. I did get away from it for a while when life got busy and technology changed, but I do enjoy it when I have time and I’m even thinking about upgrading my equipment to something with WiFi capability so I don’t have to deal with cords and computers anymore. (I primarily use an iPad Pro.)