I didn't say you shouldn't number them, I just said don't give away the fact that there were so many players that the server had to instanciate the zone
Like a story:
At first, 75 players gathered in front of the hall, but soon no more fitted
Other instances had to be created, first on, two... soon 4, soon ten !
Then
nothing was able to stop it, ... (let some time to show the new instances) we were at 25
one hour before the start of the event !And where did it stopped ? 29, 30... 33 !
An then resume whatever you were doing.