After my non-Sky Prioirty equiped boarding in FRA, I went out of CDG high-F on Wednesday. The mass of people made it that I couldn't even get to the roped off area where one side had been opened for SkyPriority. They diligently checked BP's and turned a fair amount of people away. These people jest moved to the side, created a more dense throng and making it impossible to reach the line entrance. By the time the Sky Priority line was full, I finally made it and the GA checked my BP and waved me in.

The same GA then went around and opened the other side, letting the flow of people into the general boarding side and proceeded to board them. I had now gone from being #20 in the boarding line to #40.