Great posts everyone
I forgot to add one detail in the post above.
They are relative newbies, they have been in the lifestyle for only about 7 months and this was to be their first house party. It has kinda put them off abit, but they do plan on trying again before summer is over and we WILL be attending

We've got to know them quite a bit better since the original invite, and realized that they are really nice down to earth people who we like!
Thanks for pointing out class and money don't go together all the time, It was in the back of my head, just couldn't get it out.