Pickup here takes place over a 45 minute window, otherwise I would absolutely have the kiddos dressed and ready. We actually try to be outside for the last bit of the day, as I find that much easier to handle. When the last kid is picked up, I go inside, so there is no lingering.
I am having this same issue at pickup with one of my dck, and will be laying my foot down. His antics when his mother arrives are getting ridiculous and I do NOT want the other kids picking up these habits!!