Actually I think these two are irrelevant... especially AE CX Pt still have unlimited access to PPL in Hong Kong... Which did help to relief the pressure of HKG lounges as sometimes I also go to PPL instead ;)
Oh yes, you are correct. I always use the Priority Pass card but the Plaza Premium Lounge access is a separate benefit of AE Platinum and the AE CX Elite card. I had thought this was for a very limited numbers of visits, but it does show on the website as unlimited. I also seem to have the same benefit with my HSBC Corporate Card. So that's all good, then.