We will have to start a "brasserie" punctuality sheet!

Don't you mean a "cancellations" sheet, the brasserie is only as punctual as the train its on and you can still make purchases, but if its cancelled there's nothing that you can do about it except to go hungry. Hey!, now thats an idea, a "Hungry Passengers" thread which can also include those instances of "no buffet facilities on this service".