Hi all flyers, I would like to start a proper keeping of all op ups experience with detailed information. Details and format are as followed

Flight: SQ228 MEL to SIN
Booking class: PE
Fare class: P
Upgraded to: J
Date: 09/Nov/2018
Online check in: No
Online seat selection: Yes
Meal selection (BTC/Special meal): No
Upgrade notified at (check in/lounge etc): Boarding gate
Status: KFEG

I don't know if I'm lucky or what. The past 3 bookings I have at least 1 segment being op upped. Forgot some details so wont be posting. But basically SIN to HKG, HKG to SIN, SIN to MEL. All economy to premium economy.

Hope everyone can share their experience and discuss!