HI DejaVu - I too hope it goes well. My advice would be the same if the conversation goes in an "I think I've made a mistake" or "I am happier living apart" direction. Stay calm, validate, don't commit. Easier said then done I know.
Your weekend away sounds wonderful.
I don't really know the right answer re the kids. Most of the time mine seem fine, like they accept the new normal. Then there is a birthday or a family tradition, and suddenly they become moody/clingy/teary. Or something minor happens (a lost pen, what they want not being on the menu in the restaurant) and suddenly there are silent tears falling down their cheeks. They never say I'm sad because Daddy doesn't live here. They try and hold it together for us. I think you gave the right answer though. By saying Daddy wants to spend special time with you, you made it positive. You gave reassurance that they are loved and that you are both onboard with you going away on his birthday.
