About 48 hours since I bought GCU but still not activating, I signed up for their forum and left a message so hopefully support can help me there. Really wanna get some more orders in before this promotion goes away...
I don't know exactly when mine activated, but mine is activated now about 48 hours after receiving the confirmation email, which was I think like a day after I ordered it.
Anyway since mine activated I got my orders in oh god I spent a lot...but I saved a lot I guess. Counting the Visa and GCU discounts together:
Neon joycons + GCU to start with $25 off
Cable modem (just cause I need one for a new place) and Puyo Puyo Tetris, $33 off (and $17.28 back for price matching the modem...which seems like too much back but I'm not complaining)
Bomberman, 1-2-Switch, some amiibo filler, ~$50 off
Zelda, Mario Odyssey, more amiibo filler, ~$50 off
And like $3-4 back from Ebates eventually.
(...just remembered I also ordered AirPods from Macy's for $24 off with a sign up coupon there, which I realized I could've gotten slightly cheaper at BB, but Macy's had them in stock vs shipping in April. Also more Ebates cash back if that goes through)