Holiday insurance for dependent adult children

[Hermanfromguesswho]

I am on holiday currently with my children (single parent)
I have one adult son (19) and two under 18s
my eldest is autistic.
I had a thought this morning about what would happen if I or one of the younger children were taken ill or had an accident while away. Would the insurance company expect adult DS to travel home alone or to accompany the other children home if I was in hospital?! I declared that he is autistic on the insurance but it didn’t ask any questions relating to his independence.
I asked him this morning what ge would do if I had to go somewhere for a few days while we were here. He said he’d just stay in the apartment the whole time with his games. I said what would you do about food and he didn’t know. So I went through walking to the supermarket etc. There’s no way he’d be able to navigate travelling through an airport.
Do I need special insurance next time? Or does his autism diagnosis declared cover these things?
Any experience appreciated!

Perhaps this is in the wrong section but bumping just in case the right person sees!

Do you have another trusted adult or family member who would be able to step in to help, supporting from the UK but who would be able to travel if necessary?

Does your young adult son carry an In Case of Emergency card with him which he would be able to show people which contains emergency contact information? It should also contain a reason why he needs support.

How old are your two younger ones?

I’m no expert but I don’t think travel insurance would cover this kind of thing. I think what you need is an ‘in case of emergency’ contact. Like the other poster said a trusted adult (preferably several) So you say to your son if anything happens you need to contact said aunt/uncle/friend/neighbour and they can assist him or fly over if needed