First up, don't go there in summer. I thought, having endured Australian heat for many years that I'd be able to handle anything, but ****, that is one HOT place!! Rarely below 30 overnight and reaching 46 on a couple of days I was there. Humidity compounds the problem. On later advice, the best time to go is mid-October to Feb/March.
It must be one of the most ostentatious cities in the world. Seems as if it has all been built overnight (and it effectively has) but also it seems as if architects had competed in a 'design the craziest building' competition. There are some weird structures there.
The bling continues into granite-paved footpaths and pedestrian crossings. Cheap Asian labour keeps the city pristine; I never saw a dropped cigarette butt or even gum or bird crap on the ground. No cars under 3 years old (it seemed) and not a large bike in sight, although many 250s race around with pizza and Uber Eats hot boxes on the back.
Segregation is like USA's racial uprising where the front portion of trains and buses is for women and children only. Women receive no favours from men in the other parts of transport for I saw no man stand for a women - save for one Indian guy who must have been new there, OR, had better manners than everyone else.
Road network is brilliant, as one would expect for a 'new' country. 140 kph limit on some freeways!
All water is processed from sea via desalination plants. Supposed to be okay to drink, but I'm a tad wary of that.