I haven't thrown my own, but have attended two separate ones...
They were both pretty fun because it was a variety of age levels and types of women. The food was good, the conversation was flowing, and there was also alcohol involved!
With each party, another key component was it was also, like, a girl's night out. It wasn't just about, "Ok, come to this party, buy a sex toy and be out!" Ladies have to view it as a place to relax, socialize AND do something extra. At one of the parties, we actually went out later into the night and did karaoke and hit up a couple of bars, so that made it even more fun...