When no MB places appeared on the website for weeks, I e-mailed them and moaned (in French, you are right) that I felt the members had got a rotten deal and that the "priority booking" was a total farce. But I did play the disabled card and explain that BN and other sites are a bore for me. The next day they e-mailed me and swapped my BN places for MB ones. This was the week before the bookings were opened up to non members.
Whether it was the French or the wheelchair which did it, I don't know.
