Handshake, Hug, or Air Kisses???

This was my very entertaining dilemma at work today.  We had our whole European recruitment team in London today for meetings.  This means that we had recruiters covering France, Holland, Italy, Germany, Spain, and of course, the UK.  The nationalities of these recruiters, however, encompasses Belgium, Australia, Italy, France, Germany, Spain, Portugal, Brazil, Sweden, Scotland, England, and the US.  To make matters more difficult, the vast majority of them are women.  I had already determined that a handshake was an appropriate greeting upon first introductions, but the whole goodbye process was far more complicated.  Given that I had met most of these people for the first time, I had to quickly think about where they were from and address them with the proper goodbye when they were leaving this evening.  I have never felt like such an idiot.  I think that I gave air kisses to the Australian(not right).  I have learned quickly though to just use the excuse that I am an American in worldly training and that always seems to make people sympathise with me!!!