Slickrick, I think that again you are not reading the posts, the question was "EXECUTIVE LOUNGE" Concierge's, not normal concierge's. Big Difference. I have never really gotten any special service from a lounge concierge and most times when I ask them something they are clueless, often they only seem to deal with checking that people belong there. If a regular concierge does something "significant" for me, he gets a tip. Telling me where the nearest subway station is, or elaborately taking a free map from its holder and making a big thing about marking the one block walk I have to make to get there (especially when i tell him its not necessary) does NOT warrant a tip.