I have been to My Apartment in Mississauga several times and the experience really depends on the crowd that you are with, as it is for many other situations...
I have gone to this club by myself, to meet other friends inside the club and the experience waiting in line is really typical of any nighclub, i.e. if you are a guy on your own you WILL wait, and wait, and wait... but if you are with a lady, or if you are a lady, then your entrance to the club is quickly guaranteed!
I have been in the guest list in the past and this has helped my girlfriend and I to get in rather quickly. One time we even got a free drink from the manager that night...just because (because we're cool and good looking, that's probably why!).
This place has good music to dance to, good prices for drinks (around $5/drink) and a good crowd. The place gets really busy after 11-12 on Saturdays and it is generally a good time. The dance floor is big enough to get some moves going (as I like to do). Generally top 40 and club hits playing, it's a good time overall. There is no need to be really dressed up but a casual good look is demanded.
One of the good clubs to go to in Mississauga.