A first South Xinjiang trip usually needs an easy opening day more than a delayed reward
Many travellers treat a Kashgar Old City night as flexible city content that can be placed almost anywhere.
For a first family route, its real value is often not the city itself but whether it gives the group a low-pressure entry point.
Keeping Kashgar first helps clear the small costs before the plateau day
One night in Kashgar after arrival often makes supplies, sleep, breakfast and the first walking day easier to handle without rushing.
That means the Pamir segment starts as a main task day instead of as a continuation of unresolved arrival chaos.
A post-Pamir Kashgar night can still help, but it should not be the only buffer
After the plateau and long road, Kashgar can work well as a clean finishing stop, especially before a flight or a final recovery evening.
But using it only at the back end often forces the front half of the route to start without a real warm-up window.
Delaying Kashgar makes sense only when the front half is already very light
If the early route is already gentle or the group is very experienced with this travel style, later placement can be defensible.
For most first-time family groups, the steadier default is still Kashgar first, Pamirs after.