You get all dressed up to go to the kallah's house or a hall where you stand and shmooze with random people for all of half an hour (tops) and then go home. I always feel like i should go out afterwards because im all dressed up anyway :) Vorts are just uncomfortable because you can have these two-minute conversations with people you never see (and won't see until the next vort or wedding) that consist of something like this: (here's the one-sided version)
"Hi, how are you?"
"Good, Baruch Hashem"
"So what are you up to now?"
"Do you like it?"
"Oh, that's great."
"See you at more simchas! Iy"H by you!!"
These conversations are sooooo stupid! Most of the time you're not even listening to the other person's answers because their response is so predictable.
Then you go over to the kallah to say mazel tov. She gives you a kiss, says "thank you" to the mazel tov, says "thank you" to the "you look so pretty," and maybe points out her chosson. (If you're close to the kallah then this doesn't really happen. what does happen is some screaming and hugging and "I can't believe it"s from both of you.)
Before you leave you survey the room to see if there's anyone else you should say hi to, and then leave.
It's always best to go to a vort with someone, in my case, I like to go with a friend who wants to get out of there as fast as i do. if i go with my mother she'll introduce me to everyone she knows (usually a lot of people!) and ask them if they know any boys for me, while i stand there and smile (uch!)
i'd much rather go out on a date!