Wednesdays a bit rubbish for me as my two are in nursery Tuesdays and Wednesdays (although I could come along on my own and waft about with a glass of wine, pretending to be shocked at how other people's children behave!). Sounds as though there is quite a demand, though, so maybe you could also have ad hoc days once things are up and running. There's clearly no shortage of mums needing their sanity saving.