I'm going to be Matron of Honour in a few months at a childless wedding. I'll be leaving DS with one family (who aren't invited) as he is very comfortable around them and leaving DD with another family friend which she absolutely adores. I've been told that my kids can come along but feel that i won't be able to attend to them on the big day and at the reception. I've told mum and dad that they'll probably need to leave early and pick up DD as she'll find sleeping in a different house pretty hard. It will also ease my mind, knowing that she's at mum's place during the night.
It's great having a childless wedding, but when you have kids yourself it's hard finding a suitable minder. I think bf bubs are ok to attend, but no toddlers running around.