One person I know of took 20 years to confess to immorality, so it shows Holy Spirit did not reveal the sin. Another brother has one of the worst names for dishonest business practices in the community and yet not d/f.
My friends used to come over and regularly get drunk, one was notorious for hugging my toilet bowl after one bottle of wine too many. He has now said that he does not want to shun me but will have to so as not to get in trouble from the elders.
My son is not a JW but still gets invited out to JW parties and nightclubs and said they smoke, have sex etc, really not different from the worldly parties he goes to.