Hi again Strawb - in case you wanted to hear about my departure....kerbside at airport at 4:28pm today (Saturday 25th), in lounge at 4:50pm, and that was with a 5 min delay at check-in while they gave me a lounge pass, then took it back, then gave it out again - double-checking I was eligible and not on a 'lite' biz fare or whathaveyou sans lounge access. So could have been as fast as 17 minutes from stepping out of the car to walking into the lounge. Pretty good! Biz class certainly helped. Although no official biz line for immigration, there's a couple other choke points / documents checks were there are special jump-the-queue entrances for biz class and similar.