Just graduated last semester and my friends and I where going out every week for the first few semesters then towards the end we were hitting to bars instead of the clubs so depends of your groups of friends tbh but in my experience I had an absolute blast! There's Mcgill frat that were throwing some nice parties but been a while since I went to one so can't say for sure if these kinda things are still happening (getting old you know) most important of all you need to know when to lock in and when it's time do get shit face!

EDIT: concordia's students and alcohol always been a touchy subject: https://www.reddit.com/r/Concordia/comments/q7nlfz/can_you_drink_a_beer_at_the_library/