https://www.klm.com/travel/nl_nl/fly...s/platinum.htm
¹° Lounge access fee varies depending on the airport and access is subject to availability.
* Flying Blue Platinum members can take their children aged 0-18 for free into the KLM Crown Lounges at Amsterdam Airport Schiphol when they are travelling on the same flight. Platinum members travelling on the same flight with their children aged 18-24 receive a discounted access rate of €15 or 2,500 Miles per child.
I understand from FB that this is currently only offered at Amsterdam.
Personally, does not impact me but added benefit for those who want their family to enjoy the benefit on an annual holiday.
I suppose with the expansion of the non-Schengen lounge there should be enough availability to ensure does not become overcrowded.