How to give a day summary?

I am taking over as a lead during pick-up time for the very last of our students and have never been the point person during pick-up before. What should I take note of during the day? How do you broach it if the kid got hurt or had a hard day?
I am so excited for this opportunity to grow as a teacher and so grateful that this conversation is only for 4-5 kids, most of whom I am with all day.