How is OP's case different from this
https://www.flyertalk.com/forum/cath...s-thereon.html ?
No upgrade or lounge access is SOP, neither for a mother with a child and an infant, nor for you.
No hotel is also SOP unless you are stranded overnight (I did see a stranded case on an evening departure recently, KA trying to get Plaza Premium to accommodate two Indian passport holders who I presume KA cannot get pre-registration to enter HK for)