I am fully aware of that. I work with children with all sorts of physical and mental disabilities.
Unfortunately a lot of people using the RAP system in the UK are people with 'disabilities' that do not require them to be unable to stand in a normal queue.
The pass is supposed to allow you to skip the queue, but still have to wait the equivalent of the queue time, however many staff don't bother with that aspect of it meaning they can just go and queue for another ride.
We actually witnessed a situation on the AT meet where a parent got angry as the staff member wrote the time 60 mins later on his sons RAP sheet and he started going off on one about how his son won't be able to cope, clearly not understanding it wasn't a fast track ticket but merely a means of his son not having to stand in a physical queue.