At parties,its different to one to ones (at least with one to ones you can delude yourself to a certain extent) you actually see the previous punter dismount and what they have just done to the WG,and though some WGs have a shower after (I see this as a time wasting exercise) there are many that just wipe themselves with a wet wipe then apply loads of lube.SOHO walkups are probably pretty much the same scenario except you don't see the previous punter in action.Parties are not for the squeamish.