Thanks for the clarification. As you know, I alternate weeks and it's the model I see most often around here. I've been advised to have them over for dinner in the middle of W's week (for kids under 4 yo), but after letting me do it twice, W doesn't allow it anymore. Anyway, it works really well for us. The kids are happy and they love the stability of it.
You reminded me that D3 has added something to her nightly routine: she asks me not to leave her, not to go to work for instance. I always reassure her that I'm staying at home with them all night long. It might be an impact of the S, but kids can easily latch on any routine, so I don't know.
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.