Can you choose your seat when booking Bus Flt with Thai using Life miles?
The short answer is yes.
We booked business class from Milan to Sydney using Lifemiles and were able to book seats on all flights. Quite a complicated route (worked out by the helpful Customer Service person at Lifemiles) Milan - Brussels on Brussels Air, Brussels - Heathrow on Brussels Air, Heathrow - Tokyo ANA, and finally Tokyo - Sydney on ANA. This avoided the HUGE taxes imposed by UK on long haul business class flights. GBP438 or AU$750 per person!!
Were able to book adjoining seats on all flights using the booking reference on ANA and Brussels Airlines respectively.