Well for me its not really about the soap that is more of a concern (even though surely they also use cheap soap, some even say they use just dishwasher detergent!) but more of how they wash where they just wipe as they go, no proper method like start from top then to bottom etc2. Having said that I do send my cars countless times to whatever car washes under the sun which have the cheapest price I can find and my car paint is still not too bad despite that. Sure they are already not in the best condition but still good enough. However I also do not send every week coz I also often wash them myself. I send to car washes only when I'm lazy. You car is black though, so you should take more care of it better than mine in silver coz black is the most difficult to maintain and the easiest to show water spots, swirls, and scratches especially on the hot engine hood.
Good that you're happy with it. That was my consideration also last time, it fits just about everything of my requirement well, only still not powerful enough (and extra 100HP/100NM would have been great).
How is the fuel economy during the trip Must be very good right? If driven smoothly, you might not need to refill to return to KL coz I had done that once before, went from KL to SG and back to KL on 1 full tank. Your car must be even better coz newer car.