Quiet complicate to know but I made the reservation at the musea, I asked for a guide who speaks French/Dutch and I said we could be about twenty people(officially) but we also made some publicity, so, I can't say...I hope

.We've changed the schedule, the meeting will be a bit earlier (about 10h30' on the Esplanade). I'll post the right time as soon as it will be confirmed (by the guide/people coming from Paris)