Something happens, you end up running late, people are human. You have a working phone, drop them a text, all fine.
We have put on a buffet for MIL and SIL. Dc are starving. They live 20 minutes away.
Is some indication that they might be late too much to ask? Their excuse is my baby niece but we have always managed to be on time even when our dc were very small.
I am cross.