Originally Posted by
jinglish
AS's Saver fares are in the X bucket, so you should be fine. SQ should be able to give you the AS confirmation code after you make a booking, though you may have to call for it, and you can use that to sign in on AS's site and select seats.
No!, AS Saver fares booked into X are very restricted for seat selection in the back of the aircraft. If there are no Saver designated seats for selection, one is assigned at the gate.
OP: Is this a revenue or awards booking on SQ? You mention R & V fares which are not AS Saver fares. You are able to select seats on those fares but still limited to non-Premium seats and those seats not designated for full-fare tickets or for those with Elite status.
If you are booking a Krisflyer award on SQ then the AS flight would need Saver Award Space, W for Economy and A for first class.
James