I don't have a lot of choice for meeting times, there are two meetings, one at my workplace and one a town over about 10 miles away. They are both at night. I've tried every combination of eating/drinking to get me to weigh in, usually it ends up being eat normally with an early lunch and the kitchen closes at 12:00 noon.
I bring water and a snack to my meeting because I'm always dying of thirst and starving by the time 4:30 rolls around.
And I am superstitious, I wear a skirt every week because that's what I wore the first week, but I also layer up when it's colder and shed the layers when I get on the scale.