I've written in December 2013 that the KLM lounges could be used on arrival until 11:00 by WBC PAX who decided to skip breakfast onboard and wanted something to eat in the lounge.
I read that probably in Zakenreis/Luchtvaartnieuws/FlyingDutchman/HollandHerald/? but I can't for the life of me retrieve the article.