I've taken a few parents travelling with small children in the past, but no longer use the airline lounges - not enough amenities to make worth my while.
One of my guys is a lifetime admirals club member so he and I go in. He brount in an older couple (80+) before their flight to London last month. They were on a second honeymoon so we bought them drinks before the flight and tried to get them to relax before their FIRST EVER airplane flight.