Sri Lanka is one of the easier long-haul destinations to travel with children. Internal distances are short compared with India or Thailand, tourist infrastructure is widespread, the sea is warm for most of the year, wildlife parks sit within half a day’s drive of the hill country, and the food can be dialled from mild to fiery depending on who is eating. The real challenge is not finding things children enjoy — it is sequencing them so that nobody spends six hours in a vehicle on the day a four-year-old desperately needs a nap. That is where the structure of a private, tailor-made tour matters far more than the list…