Ah, so you have been caught by the balls, greenhopper!
It depends on many things, really - the university, the location, the time of year - obviously when it's exam time people are going to be more focused on studying - and the general ethos of the university. Can I ask where you're studying, out of interest?
I studied at Brunel and Academy was alright in terms of turn-out, but it looks like it's gone south nowadays (after I graduated though!)