We would have had a blast! CX 505 from NRT to HKG was also great (only 4 people on board). I tried the Kaiseki meal + Onion Soup, Stir Fry Beef and a little shrip, plus Cheesecake for desert, and had the best of both worlds.
The crew could not believe I was just flying to Tokyo and back for the day.
Long day but lot's of fun...would have been great to see you.