I think not sharing a room is the only sane decision here.
I think of Similar dilemmas when my h does the smallest nice thing towards me. If our h ever want to restore our marriages they gonna have to do more then make a small gesture. We deserve more.
Sounds like a fun trip, maybe separate space will be more fun for the whole family. Atleast it may give you some time alone to catch up with an old friend
---- M 39 H 35 D5,D4 M 4 T 9 ILYBNILWY 5/18/11 Left 7/11/11 Divorced 12/1/13