We have lots of kids and grandkids.... if we showed up at what was supposed to be a party for swingers and found kids we would have been out of there before anyone had a chance to close the door.
If your hosts don't use good common sense then you are left to yourself to do what you believe is right.
We also bail when anyone brings out the drugs. I have no problem with pot smokers but I don't desire to be around it.
BTW... the swingers parties in the 70's where not like described above.
There are people in all walks of life that don't have the sense god gave a rock and it seems you found a whole group of them in one night. Don't let that reflect on the Lifestyle. There is thousands of others out there that do not act that way. Not even in the trailer parks we visit.