Thanks for the post and for the detail. This is fascinating to me as part of what constitutes "celebrity" as well as why I like this thread . I have been on a flight and also in the lounge at the same time as Robert DeNiro a couple times. Once in JFK and once in LHR. Both those airports have CK/5 Star staff certainly. But he didnt use them. He boarded by himself when the flight was called. Im fairly confident in saying he is a MUCH bigger star than she is, but she got the celebrity handling. To me, how the different people are handled is as interesting, if not more so, than the IDs of celebrities.