Can I have your opinion here please?
If a website says that a childs ticket is free
"up to the age of 16 (or 18 if they are in full time education)"
Does this mean that an 18 year old can get a free ticket? I am the website owner and what I WANT to mean is that on the childs 18th birthday, thats it, they're no longer a child - no free ticket.
So 17 years, and 364 days is fine... 18 years, 0 days is not fine
So "up to the age of 18" what does it mean, Pedants?