I have never had to much of a problem at Syd, Heathrow is a dogs breakfast, BNE is a shed, OOL is a disgrace, FCO, well, they are just nuts, (put up a gate sign, then change it without telling PAX) LAX is the largest unfenced lunatic asylum in the world, and so on, as for the Japanese they were so regulated and unable to spend other than on Japanese owned hotels and products, (up here on the Gold Coast it was a eye opener) they were never the golden goose anyway. The way things are heading we will be grateful for any tourists, at any airport, as long as they arrive HERE over the next few years, or you will really have something to gripe about.
