Certainly not! It is not cheap to land a 747 en route (landing fees), have staff standing by to service it (turnaround fees), load on extra fuel (fuel costs- the operation is not as efficient and overall fuel will be greater), pay extra crew costs (and possibly have the crew run out of time if delayed), lose aeroplane time, be delayed on your schedule.....all to save a few hotel costs when you can probably pass those pax over to the competition anyway? All for the very few occasions in the year when it will be critical? Think about it!