My op up rate on long haul was pretty good - probably hovering around 50-60%. But I was a bronze travelling the notorious YYZ route and was usually in WTP so it's not that surprising. Once I discovered FT I became silver and realized I could travel CW for the same price and often there isn't an F cabin on my flights so op ups have been 0% since then. Short haul I have been travelling 2x week since September and have never been op upped.