'How can it possibly be an equal opportunity in this case if the group is able to do something that non disabled people can't do?
Not convinced Butlins are wrong but the answer to that is easy: if they were not disabled adults they could attend in small independent groups without need to be taken by a carer or as part of a resi unti group.
However IME Butlins have been excellent with my ASD boys and although we haven't been for ages and can't see it happening ahgain in the sort term at elast, the boys loved every minute and created some great memories. I hope we are in a position to take ds4 at least once.