Could you sit down with him and tell him how you feel, that you are confused by all of this, and that if there is hope for re-conciliation in the future you will go as a family, otherwise, you feel that you should only be seeing each other in respect with handling the drop offs of the children? BTW.. is that how you feel? If he is set on separating, then I would say to give him space for now. That is my opinion. What do you think? What are your boundaries? If he is still telling you that you're done, etc, are you still going to go on the trip?
I know, it is all so confusing sometimes. I am dealing with the exact same thing right now. My H left for a camping trip this weekend with his extended family and the kids, and I didn't join him. I had the feeling he didn't want me there. It disappointed me so much to not be able to go to this family function. It is all so confusing to me right now, whether I should be having 'family time' or not! So I understand where you are coming from! Ultimately it comes down to you. If you can go on the trip, with no expectations, maybe it is good. And you can DB, with a PMA, and he may take notice. And if you can spend quality family time that is great for the kids!
I think he can also see what he is 'missing' when you are there, not only if you are gone, and he sees how happy you are, and how good of a mother you are.
M: 8 yrs T:14 Twins:7 S:5 BD:'NLILWY': Feb/2013 Mar/Apr/May: MC June: "living in limbo" Sept 12: H moves out Oct 20: reconciling Jan-Feb 2014:MC Feb 2014: separating, and H moved out.