There are a hundred people in the actual show - 48 in the chorus, 20 supers, 16 kids and 8 principals - plus the 68 in the orchestra and several dozen on the crew. What's known in math circles as a shitload of people.
Since Act Two takes place on the streets of Paris, every person onstage is either a seller or a buyer, meaning hundreds of props change hands and have to find their way back for the next performance.
I also learned that the used (or "dirty snow") gets reused on the ground so that only new, clean snow falls on the heads of the performers. And, no, there's no yellow snow. I asked.
We bloggers sit in the lobby before and after the show and during the intermissions, which is great because it means we don't have to make small talk.
Plus we get free drinks and cookies.