Cheryl Hines and Robert F. Kennedy Jr. were married Saturday at the home of the groom’s mother, Ethel Kennedy, in Hyannis Port, Mass. The bride, 48, is an actress, director and producer who played the wife of Larry David in the HBO series “Curb Your Enthusiasm,” which ran from 2000 to 2011. Mr. Kennedy, 60, is the president of the Waterkeeper Alliance, an international water protection organization, and a senior lawyer for the Natural Resources Defense Council, both in New York. He is also the chief prosecuting attorney for Riverkeeper, another environmental organization, and...