ROBBY THE REVEL: “The Revels slogan is ‘Join us and be joyous,’ so that’s what I did,” said The Indy’s Robby Robbins, when Revels founder Susan Keller asked him to join the ensemble. Since August, Robbins has been learning holiday songs and practicing the polka in preparation for their December 17-18 shows of The Christmas Revels. “Not only do I get to wear lederhose, I also get to play the dragon Fafner,” Robbins said with glee.