Even if you did your OLCI you still have a high chance of being kick out, for example on my recent Monday morning flight from HKG to PVG, I got bumped off, downgraded from CX PY to a later KA Y flight, on Friday later afternoon flight from PVG back to HKG, the check-in agent also asked me if I'm willing to take any Saturday flight, no upgrade to J, or accommodation provide, I said NO, I insisted to stick on my booked flight, there were just a bunch of DM on board (now I'm back to GR from DM), on these route, PVG, PEK, LHR, LAX, so it really depends on how lucky you are. DM entitled guaranteed seats so if your flight have more DMs on board, very likely you'll get bump off.