To @ArseInTheCoOpWindow @FatGirlSwim @3AndStopping @Qbish @nancy75 etc -
I have been in exactly that position. My 18 year old was clearly too distressed and vulnerable to be left at home with a friend/neighbour popping in. With 3 days to go there was bugger all else we could do.
18yo had to accept that yes, we were all going, no exceptions.
Not Going was not on the table.
So we were going to have to problem solve our way through it, the way we had to problem solve our way through school, bullying, the various significant mental health crises they’d faced.
Not wanting to be out in public - easy, we packed DVDs, a Switch and books and they were free to relax in the hotel room when they didn’t want to go out. As it turned out, sometimes going out was fun.
Worried about food - we packed some of the “safe” foods, I contacted the hotel about what would be available and we discussed meal plans, packed measuring cups and scales (like we usually had to).
Anxious about getting ready - no worries. Leave it to me, go watch a DVD with your brother because we know we’ve done this before and the days before are the worst.
Usual sensory things to keep things as quiet and unstressful as possible, the favourite calming audio book set up and everything fully charged to get us through the journey.
What they needed first was to know that “I don’t want to, I can’t face it” was not a possible outcome (as we can’t magic up a career for them to stay at home). It is going to happen, so let’s stop the “I can’t” conversation and move onto how to make it workable.
We spent far too much energy over the years trying to address “I can’t” over the years. It created nothing but upset for them in a situation where an opt-out was not feasible. So we only deal in “how do we make this ok” now.