JWs regularly have get togethers where they enjoy others company just like any non JWs. There are restrictions though. So no drugs, no smoking and drinking alcohol in moderation. Also dressing modestly and non sexual dancing are required.
So for anyone wanting any of those things you could say they are party poopers. Personally I was always quite happy with those conditions, and any non JW parties I go to now, I would prefer those conditions.