There was the time we spent a week at the beach with two other families with children the same age. Sometimes a family went fishing for a day together, other times it was the men and boys who fished, while the girls sat around and talked. Going camping as families is another such activity. One Dad may take a nap while another takes the kids hiking. The tired dad may be ready to play a game with kids in the light of a campfire later that evening.
Parents spend time together while the children play.
Or, there are enough people to make a board game fun. This is especially true when a family has only one or two children or is a single parent with children. When children are young, the parents' values are easily passed on, but as the children grow older, values of peers make the greater impact. It is worth cultivating extended-family relationships when they are young, for they will often take such friendships into their youth. When our children were teenagers, we moved to another state.