AJ - Glad to hear the time with the in-laws is going well. D and S are loving the attention, and remember that their grandparents love them. You in-laws are not responsible for the choices your H has made. Let them spoil the kids a little.
I still have no had any contact with my in-laws in two months. I am pretty sure I have told you before, but I was/am very close to them. It kills me, but I do not push it because I know and understand that they are W's parents and not mine.
I think the only boundary you should make is the no R talk about your H. Keep the conversation light and about the kids.
You are doing awesome.
Me - 33 W - 33 S - 9 months M - 3 years T - 5.5 years Bomb - 12/14/10 ILYBNILWY PA discovered - 1/18/11 PA began - 3/22/10 Separated