taxis will come if demand. Presume that taxis at SYD, like BNE & MEL can wait around for hours at times to get a fare. Better to sit at BWU for a few minutes than at SYD for hours.
Incorrect.
I had reason to divert a Dash 8 into BK a few years ago post-curfew at SY due Wx. My company managed to get
1 taxi to the airport for 50 PAX. When asked, the taxi driver explained that drivers have security concerns with BK at night and are not prepared to take a risk.
The only way to resolve the issue was to get QF Transport to send a bus 3 hours later.