Preferred seat selection on Vietnam Airlines
 

I have SkyTeam Elite Plus via Air France Gold. I booked a Vietnam short haul (SGN to SAI) flight in cash in Economy Lite. I listed my Air France number at the time of booking. When I try to select preferred exit row seats, there is a fee. Does anyone know if Vietnam Airlines will waive this fee for SkyTeam Elite Plus? I know not all SkyTeam airlines do this, but I was able to with Kenya Airways so I figured I'd ask before I pay for the seats. I did contact Vietnam Airlines via chat and they seem to indicate that I would need to pay, but I wanted to check here to be sure.
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yes, unfortunately there is a fee for the preferred seats. But you can select other seats for free.

Sorry to jump on this thread but is Vietnam Airlines seat selection free in business class long haul in all booking classes?

It was for me booking into business fare code I, which is the cheaper business fares and that was most recently on round trips between SGN and ICN/PUS. I always put my Flying Blue Platinum (SkyTeam Elite Plus) number into the bookings.

My last flight PUS-SGN had an aircraft swap from a B787-10 to a A350-900 and my selected seat (B78X 3A) changed to A359 7D and at the check-in desk the agent moved to 3A and was told the cabin was very empty (and it was for the flight) so I've no idea why the VN system moved me so far back rather than keeping it unchanged.