Hello! A quick photo post. It is 7:09 AM in Hong Kong. My flight arrived at 4:22 AM. I have walked the entire Y-shaped terminal and sat down to a bowl of Ajisen ramen for breakfast. There is a small branch of Muji in the departures terminal which opens at 8:00 AM. My flight boards at 8:30. The store is on the opposite branch of the Y from my departure gate. If I time it just right, I could look around for five minutes at opening time, then speed walk back to Gate 45 for my flight to Bangkok. I don't even need anything at Muji, but I have so few chances go into one of their stores.
I really like HKG although it isn't wildly different from other large airports. It's the setting in the sea surrounded by mountains which appeals to me.
Updated with three post-boarding photos: