Our first "in person" meeting with a couple we have had initial contact on line with is always in a neutral location for the expressed purpose of getting to know each other with the understanding before hand that we do not "kiss on the first date."
We do attend some "house parties"; i.e. parties held in the home of friends attended by those in the lifestyle. The option to have sexual activity is there - bedrooms have been prepared for it, a hot tub may be available for those interested etc. Even in this scenario we are not likely to have bedroom activity; definitely not with those we have met that evening for the first time, and even so with those we have known for quite sometime. Perhaps this has to do with discretion, as activity between participants rarely goes unnoticed by others. But more likely, it is that activity in this type scenario carries with it unwritten rules of courtesy regarding the utilization of a bedroom for "too long" a period of time. That sort of pre-determined boundary is not one we wish to impose on our enjoyment of activity.