I've only been to 2 midnight launches, Resident Evil 5 and Halo Reach, for Resident Evil 5 there were only 4 dudes lined in front of me so it was really quick... Because all 5 of us were the only ones that went to pick it up at midnight
For Halo Reach I went with one of my cousins, there were a lot of dudes this time but still, it was fast and easy, the employees had everything ready, and we were told to go into the store in groups of five to make things easier, so yeah, just go in, get your copy, leave. That's all
There aren't many midnight launches here because the main videogame stores here are inside malls that don't like having people inside at that time... Unless it's a bar/pub/tavern/something like that.