what happens for QF WP trying QF lounge with 3 kids travelling as family?

last time i entered HKG Qantas lounge travelling jal econony and they welcomed all of us warmly even policy is for 2 kids. i guess being its own lounge and as qf own platinum they were.being nice.

what about sydney F lounge? are they welcoming for famy with 3 kids? or if i get turned down what is my backup option? i am happy to say i exit the lounge so wife + 3 kids can stay (thus 4 guest in total)... i often travel alone and upcoming trip is entire family (small kids) to sydney love to let wife try the lounge