
NTA!!! I work summer camps every season and obviously we could not leave until the last kid left. One kid didn't get picked up until the very last minute cause her mom worked until 5 (camp officially ended at 5). Thing is, she worked with her boss to be able to leave a few minutes early so we don't stay late. On top of that, she is in and out in 30 seconds because she knows that we wanna go home. You gotta respect employee's time in childcare.
NTA! People will say you are being rude or it’s just a couple minutes but as someone who’s worked with groups of around 25 kids (sometimes alone) and therefore their many parents, you are NTA! People need to be considerate of other’s time and you have a life outside of work. He’s holding up your time rudely.