British actor Rupert Grint, best known as wizard Ron Weasley in the “Harry Potter” film franchise, makes his Broadway debut as a young, wunderkind director alongside a stellar ensemble cast in the show business comedy, “It’s Only a Play.” The play, which begins previews on Aug. 28 and opens for a limited run on Oct. 9, sports a notable cast headed by Tony winners Nathan Lane, Matthew Broderick and Stockard Channing. When discussing his cast mates, Grint said “It’s hard not to be overwhelmed when we’re rehearsing. It’s quite exhausting trying to keep up with them.”
