Go Show Standby on Vietnam Airlines

I wanted to write about my experience using Vietnam Airlines' Go Show (standby) policy on the domestic HAN-DAD route, because I didn't find a lot of clarity online about how it works in practice. The only thread with real-world data points I found was this FlyerTalk thread , where every comment seemed to contradict the last, and some off-hand remarks in reddit threads. There's also a 2018 trade…