Way to go
Then, you just just ask a question about whether your visual visa has an event and whether it was here before.
In a situation where everyone simply moves around the hall with glasses and united in groups of two or three people in anticipation of a demonstration of a closed show of a new film about love or, on the contrary, a scientific report, the easiest way to go to the organizer of the event and ask a couple of neutral questions about schedule or something like.