Have I ever socialized with females under 18 present?
Every family reunion, holidays, too, and even less 'special' occasions.
So what? (I don't drink, either, in fact, alcohol is rarely present.)
While the granddaughters are grown now, the great grands are not...

It just means that the occasion involved minors, too, and if the parents were there it does not imply major misbehavior on anyone's part.