Noticed this post over at hkitalk that had an old service brochure :
https://www.hkitalk.net/HKiTalk2/thr...13191-1-1.html
NO TIPPING PLEASE
Cathay Pacific Airways personnel are not permitted to accept gratuities of any kind. Offering a tip will only cause embarrassment. Their reward is the knowledge that they have helped to make your flight more enjoyable.