I think EVERY Qantas pilot who's got a day off when EK holds the open day should attend. There's no commitment, no obligation. And professional people should be continually out there anyway, networking and assessing where they sit in the big picture.
I wonder if it'd be useful for the word to get back to GOD that a couple of hundred QF pilots attended? I wonder whether he would would think: "great, a way to rid myself of a bunch of overpaid, unworking whingers", or could he think "uh oh....." ?
It could be a useful ploy, overall, and will certainly be educational. They might even have free beer!