Anyone who's ever done a group tour of more than a just a few days with a decent bunch of people will know that time operates mysteriously in that bubble. Say it's a two-week adventure filled with temples, beaches, jungles and museums, that also means 14 breakfasts, 14 lunches and 14 dinners with your new friends. In total, 42 shared meals — 42 meals!
It could take four or five years with your closest friends back home to rack up those kind of shared dining numbers. The point being, if you happen to like the people fate threw into a tour group at the same time as you, then you'll find yourself getting to know them very well, very quickly. And as the years go by that fortnight will come to occupy far more rent space in your memory than any normal two-week chapter.
What this also means is that the first night after the tour has ended — that very first night of having dinner alone — hits you like that first night home from school camp. Where have all my friends gone? What are they doing right now? Shall I call them? Will I ever see them again? Maybe it sounds stupid because maybe it is, but Post Tour Group Depression certainly feels very real.
Some people deal with PTGD by being determined to cut all ties with their new chums as soon as the tour's ended. For them it would only prolong the heartache, so no reunions, no emails. But if you're lucky — and I've been lucky — you just might find yourselves at each other's weddings years down the line.