Let's just remember what evil madmen did to 4 domestic flights in the US on one day! Where you want to vacation is up to you, but as a long experienced airline pilot, I have to say that a flight deck moving at nearly 600mph is not really the place to make introductions and offer hospitality! The pilots, if they are so inclined, can make themselves at the exit door of most aeroplanes to say goodbye, and I do try and do this most flights. When you see how congested airspace is these days, even in the middle of the north atlantic, and how fast closing speeds are (about 1200 mph), I'm afraid the days of the 'office' being a 'meet and have a chat' arena are most definitely over. In the old days when we could have people up for take-off, despite being asked to keep quiet, I have known visitors start a conversation with the flight engineer on the take-off roll. Those days are over.