I have to say that I probably wouldn't even get all 18 kids in shoes of any kind, if it were me. I would consider it a huge accomplishment if they actually had on matching flip flops. Also, they would be dressed in old halloween costumes or something because I wouldn't be able to get them all dressed on my own. Plus, I would have lost a couple of them by now and probably not even notice.
I guess that's why I don't have 18 kids!