I'm going to be there in April. Not been to the F lounges before but we've got just under 6hr layover there prior to our BA flight.
Our plan on arrival is head up to Pier F and enjoy a dinner and treatment for a couple of hours. Then back to The Wing F for an hour or so to try out a cabana and have a bath. We'll finish off at the QF lounge for a brief pre-flight drink and, gate allowing, watch the queue build for boarding.