I did not give out any cards on the ride into the city. I've noticed that people are better behaved on the way into the city in the mornings. I was able to give some Just Gentle Reminder cards to classmates, mostly for bad language. I also left a couple of cards in the ladies bathroom; one stall was left a disgusting mess.
As I was riding the train home, I noticed a woman with leaky earphones. I went over with a card, pointed out her transgression. She handed me back the card and continued to listen to loud music. Proper etiquette dictates that I leave the situation alone, which I did.
I went to the movies this evening. Everyone at the theater was on good behavior.