The Croydon Guardian have picked up on something noted on this site in October, concerning the number of trams to be laid on for people leaving arena events.
As noted, the current "plans" allow for 9,000 people per tram.
Yes, that will work!
As the Guardian says:
"Visitors to the planned arena in Croydon could face 'transport chaos' because of a shortage of trams."
Roger Harding, general manager at Tramtrack, is quoted in the Guardian:
"It is an outline of the sort of thing we might have to do when the arena gets a little closer but we are going to sit down with the management and we are going to agree a final position if the arena is given the go ahead."
In other words, he doesn't think that the arena is going to happen!