Not for me or Himself: both of us spent a significant chunk of our childhoods living overseas and Himself has managed to accrue more than a million (literally) miles flown on one airline alone since he started working after law school. The kids, however, had only flown to see grandparents and friends within the continental US until last week. Thing One the geography buff has been begging us for years to take him somewhere, ANYWHERE, abroad. This spring, we started planning a trip to London (piggybacking on a business trip for Himself) and arranged to get all three of them passports.
Because the kids had to miss school, we could only manage three full days in London. Nevertheless, since Himself spends a lot of time there and is very familiar with the city, we made the most of the experience. We found an apartment near Trafalgar Square on airbnb; much more convenient than a hotel since it had more space plus a tiny kitchenette and even tinier washer/dryer. In our three days, we saw the Tower of London, St Paul's, the Globe Theater, Buckingham Palace, Westminster Abbey, Big Ben, the London Eye, a small chunk of the British Museum (you could spend days there, but Thing One had to see the Rosetta Stone and the Elgin Marbles...) and walked about 28 miles according to Himself's Garmin watch. Seriously. An absolutely fabulous time was had by all and we have now recovered from the jet lag, more or less. Only took a couple of days.
Now planning the next trip. Think it will be Munich this time. Bring on the world. :)