You'd be well advised to check the emergency exits aren't padlocked up, as has happened in few well documented tragedies. I'm thinking of the concert hall in the US which was set ablaze by pyrotechnics last year. The emergency exits were locked, and the stampede to the front doors resulted in confusion and death.
Not forgetting Britains very own Hillsbourgh disaster in 1985 where dozens of football fans were crushed to death against security fences because all exits and entrances were locked, after officials let in more people than there was room for...