Festivals are fun for kids, fun for parents and offer a welcome break from the stresses of the nuclear family. The sheer quantities of people make life easier: loads of adults for the adults to talk to and loads of kids for the kids to play with.

This quote is saying that people enjoy going to festivals, especially families with young kids. It is easier for adults to socialize with other adults and for children to play with other kids since there are so many people at festivals. Even adults, who are often stressed out with the daily responsibilities that come with being part of a family unit, enjoy the break from the monotony of their lives. Festivals can be a great way to create lasting family memories.