Swinging - anyone been to a Fever Party?

I've read about Fever Parties (www.feverparties.com) and they look fantastic. Has anyone been to one? Was it all that it was cut out to be and how hard is it really to get accepted? I'm not bad looking but it seems you have to be a supermodel and I have a bit of a fear of being rejected by the vetting board which is holding me back from applying!

Has anyone been to any other swinging parties that they'd recommend?

I'd love to hear your tales.