Very mindful I appear to have posted something quite wrong so I'm happy to delete. But I thought best to check; this is what the OW policy says re: access, which is perhaps what I'd remembered reading. I guess what I'm getting at is how does this square with what seem to be very different policies set out above?

"Infants under 2 years will not be counted as a guest when travelling with an eligible adult customer. Children travelling as a unaccompanied minor (aged between 2 and 11 years) who are eligible for lounge access, must be accompanied by an adult who will be counted as their guest. Children travelling as a young passenger (YP aged between 12 and 17 years), who are eligible for lounge access do not require an accompanying adult (Note: Subject to local licensing laws; in Japan the ages are 12-19 years)."