Anonymous wrote:OP here: not sure I want to use his own iPhone to set reminders, as that's not something he does himself. Seems intrusive. And I do expect him to pick up the kids, and he is an adult, but we all need help remembering things. What, you always remember what you need to, w/o using any reminders? Right. He is an awesome grandfather, needing to adjust to a new routine. And the ones who suffer when he's late are the grandkids, waiting for him to show. I don't expect to remind him for the entire school year, just for a bit until it's a habit.
I frequently use reminders, but I make notes and calendar entries myself. If I said I would do it, it's my responsibility to see it through. If someone set a reminder for me, that would be insulting. It implies they don't believe I will follow through.
He's an adult. He said he would pick up the kids. Trust that he'll do that. If he doesn't, let him deal with the consequences of his actions - repairing his relationship with the grandkids.