Manhattan Theater Club has announced its second extension of Broadway revival “The Royal Family,” now skedded through Dec. 13 at the Samuel J. Friedman Theater.Doug Hughes’ production of the 1927 George S. Kaufman-Edna Ferber comedy about a New York theatrical dynasty opened Oct. 8 to warm reviews and played last week to 95% capacity, albeit at a low average ticket price. Starring Rosemary Harris, Jan Maxwell, Reg Rogers, Tony Roberts, John Glover and Ana Gasteyer, the show was originally announced as a limited engagement through Nov. 22 but extended a week during previews. Also adding dates is Anna Deavere Smith’s solo show “Let Me Down Easy,” extending by four weeks through Dec. 6 at Off Broadway’s Second Stage. The play examines health issues through the prism of body and spirit; it was distilled by Smith through her trademark process of interviews, this time with a wide variety of subjects who include Lance Armstrong and late Texas Gov. Ann Richards.