Quoting Safka9973:" <blockquote><b>Quoting The Dandelion Rapist:</b>" I would either go myself, or send ... [snip!] ... are expecting us to leave. I've actually had a couple of th watch my girls in the past when we have had to leave for pickups."
Completely understandable. Please forgive me if anything I said sounded accusatory. (I promise, not my intentions, sometimes my wording comes out completely wrong, and can be easily misinterpreted.)
ETA: I just reread my previous comment and saw how bad it sounded. I am so sorry if I came across as rude.
If they are close and trusted friends and family, why not leave your LO's at home? This way they can play with the other kids. They will be so busy having fun they probably wouldn't even notice you guys had left.