I have seen VIP & CIP, along with the usual *P,*E & *SE on the purser's manifest sheet a few times. It's sometimes posted on the front of the business-class galley wall. Never heard of the other preferred 'no bump' people, but I've definitely read about a few MPs & Senators demanding they get on (and in business class or else)!
[This message has been edited by FMac (edited 08-16-2003).]