yes to lie flat beds. (well, on Qantas, anyway. I would guess that it would be the same on all companies.)
I had 2 small children with me, so not much sitting at the bar, unfortuantely (dd1 was 5, and is ASD. dd2 was 2).
really lovely - fecking enormous plane. honestly, the space was unbelievable. but essentially like any other plane - seats, aisle, in-flight entertainment, aeroplane food (nice, but still aeroplane food!)