Several times in the past few weeks, I have called a parent to extend a playdate invitation and been told the parent needed to 'check' with their child before they could give me an answer. They then call back with the reply and we proceed with making arrangements.
Today, we may or may not have a playdate with a classmate depending on how the child 'feels' at pickup (we've recently moved to America if you're wondering about time zones). A few weeks ago I even had one Mum (or should I say 'Mom' ) call and say 'thanks for the invitation to take XX swimming and to lunch after, but she has decided she's tired and wants to stay home'. I was gobsmacked.
Do you check with your dc before you commit to playdates? I think this is quite weird, but maybe I need to rethink my position?? DD and the playmates in question are 6, btw.