The opening credits and DVD sleeve for this movie list an actress named Eileen Humphreys as playing Roy Chiao's daughter in this film. Her name only appears in English in the opening credits, and I don't know much about her. She looks barely Eurasian, mostly asian, and very fetching in a couple of bikinis in the film. Wondering if any of your sources might confirm her appearance, as I don't see her listed in the database as either being in this film or appearing in any others.

Also, Sam Hui's band The Lotus appears on-screen twice in this film, both times to sing a song. I noticed they actually have a database entry (as a group), so you might want to add their "acting" credit to it, as well as to the entry for this film.

According to WebPAC, "The Lotus" band only appears in the cast (added) but the only music composers credited in the film are its leader Sam Hui, and Joseph Koo.

Sorry I was unable to check Ms. Humphreys' credit.
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EDIT: oooops... it seems your compatriot Mr. Chinchanchung will help us with that addition.