I'm new to this concept - we didn't have them when I was little, so I don't really know, which is why it might seem a bit of a silly question, but I just don't want to do the wrong thing.
Ok, what it is, is this: If my dc goes for a sleepover, and a pick up/drop off has only been vaguely arranged (host said she'd drop him off back at my house)- should I wait for the host to call re: confirming that everything is ok and that she'll be coming over/confirming if I'd be coming to theirs, or do I phone first to see how things are?