I’m flying to Denver in August, it’s a 3 class route. Trying to make sense of the wiki, it seems there are now just three remaining 3 class 777 with old CW left at LHR (assuming G-YMMA goes to LGW). So I just need to hope we avoid these 3 aircraft right?

I suppose there is also the risk that a 4 class old CW gets switched to DEN at the last minute, and probably not much chance of being flubbed on 2 x 2-4-1 vouchers and only 1 silver between us.