Hey there Geez
I really feel for you. Anxiety is something that is passed on from parent to child.
My mother suffered with it, I have it and my sister has it and my niece has it. My Grandson has it and my daughter had it, my brothers daughter has it too. So if possible dear Geez try not to blame your husband for his symptoms, I'm sure he would rather not have them. It is truly a heartbreaking disorder and the panic attacks that rise from it make one feel as if they are dying.
You do however have every right not to be placed under pressure and stress. My wonderful partner eventually admitted that he was feeling unacceptable pressure because of my mental illness. He spoke to our doctor and he was given medication for himself. And though that is not ideal, it does tend to balance things out.
Maybe asking your husband how you could plan the activity might take out some of the anxiety? If I were to plan toasting mallows I would give everyone a disposable but clean stick (one for each person), make sure everyone was a safe but functional distance from the fire and have wet wipes there to wash the sticky fingers and faces...but I have anxiety and OCD so the planning is a given
Being at a crossroads is a scary thing; when you realise that your life is crap and you really want to be stress free and happy but its too late to change things without making really huge changes can drop you into a depression and anxiety that is hard to get out of,
Lots of love & support for your situation,
Rhi