are your mdts (excluding CDG, since they so many it don't matter) popping up with more current calls made by the concierge of the CBD hotels (lets try not name names first)?
And when you get there, bellman will inform first in queue its hotel call and must pay booking? As in, you got money, take. If not stand there and wait till 7.
This trend looks like started with the grandmother hotel and getting more and more popular with the other concierge in solving their queue problem.
Initial thought its long dist pax making calls, now pick up a lot is short dist.