The stats I saw is that a lot of current transmission is in families – one member brings it in, he may not become sick, and makes others sick via prolonged contact.
I would say: if adults are having daily parties, then children are not a problem. Where adults are taking precautions, then children may be a major source of transmission. You will not notice it as most kids will be asymptomatic, but you will see “unexplained” cases in the community, more among parents.