I forgot to mention something interesting from Dad's day: they got approached by members of the Falun Gong, which is either a persecuted minority religion or a subversive anti-government conspiracy group depending on who you talk to. There's no disputing that China has outlawed them.
I don't know how long they talked to Dad and the gang, but they gave them newspapers detailing their side of the story. Dad said Frankie told them it was OK to take the papers if they wanted to, but not to try to take them to the airport or "you might be staying in Hong Kong longer than you would like to." Well, to me, that's the kind of thing I treat as a challenge.
If you want to read the articles, click them bigger. Nobody tried to see what was on my camera card!