How to while away 15 hours in Delhi airport... With difficulty, as it turns out. We arrived in Delhi at 10am, hoping to be greeted with at least a duty free shop and perhaps some restaurants in which to pass the time. What we got, however, was a room with not quite enough chairs and a largely unmanned cafe periodically selling drinks and neglected-looking samosas. So for entertainment we had to make do with people watching (and Scrabble cards, obviously. A holi...