I have been to quite a few, and dancing and the lights are fantastic. Sometimes a bit too loud, but usually pretty darn fun.
Unless you plan on dancing the entire time, which I don't advise from a "You'll fall over dead" standpoint, there is a quite a bit of socialising to be done, which actually can be fun too because people tend to be more accepting and understanding there.
It's lots of fun and I say do it, but always be safe and make sure to drink water when you need it, and if you see those shirtless buff guys that are at every rave(seriously, every rave has at least 10 steroid ragin' dudes there), avoid them, they're annoying. >.<
Good luck and have fun!
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Aspie Score: 170 of 200
NT Score: 37 of 200