Dubai is expensive especially if you have a family. There are a lot of "extra" expenses as most allowances don't always cover the whole amount. Cost of goods and services is probably 30% more than in the States and they are talking about introducing a new tax soon. Coming here should be a well researched decision. For a regional guy, it can be very enticing but for anyone with the majors in sight, these airlines are simply contract jobs. No job protection of any kind.
The economy is showing signs of a slowdown. There have been recent airline layoffs here (non-pilots).
As far as sleeping with endless women at Fly-Dubai and three-way sessions, I am sure it does happens. As modern as Dubai may appear it is still an Islamic country and often people forget where they are and get into trouble. Sex outside of marriage is a punishable offense. Yet almost every grocery store sells condoms quite openly presumably only for married couples!