Originally Posted by
hclee01
......Can I use my miles to do an upgrade to Business class at check-in counter, assuming that seats are still available in Business Class at that time?
Thanks.
SQ doesn't allow standby upgrades at the airport.

Upgrades can only be processed by KF service center, not the airport, at least 24 hours prior. That said, you can call to have your upgarde waitlist extended and SQ usually open them up a few days prior to flight date. Good luck!