I attend a couple of different groups, depending on what days I'm working, and there's always babies and children there with mums, especially during school holidays. No one minds at all, and they are made very welcome, as I'm sure you and DS will be: it's no problem at all. Good luck and hope you enjoy it.
I have been wanting to join slimming world for some time now. I am off work with DS during the summer holidays so am struggling to find the time. I don't know exactly what goes on at groups I was wondering, if i did join and was unable to find a sitter for every week. Would i be able to bring my DS?