All CC's have drama to some degree...all of them. The reason is they have people. From all walks of life, backgrounds, life's experiences, varying opinions, different genders, religions, good moods, bad moods, different ages, etc. This may be a virtual game, but the people are real. Just look at what goes in here vis-a-vis drama. Many reality shows are based on throwing a group of people into a common area, and filming them being themselves...drama will break out... Families?, yup, lots of drama there as well.
CC's claiming to be drama free are selling snake oil...people expecting a drama free environment are naive.