Haha i'll try my best
1. 9am out of Canberra... You'll get a juice and a muffin maybe?
2. Qantas these days.. something crappy
3. 734 entertainment is usually an episode of a sitcom (CBR-SYD) there's maybe 6 screens on the roof of the cabin, spread from front to back.
4. In Y - No ... main screen only.
In J -Yes, there's PIFE* operating a 2½ loop with 6 movie and 2 TV channels.
Hope it helps,
Happy Flying.