Blythe Danner’s final performance of Noel Coward’s “Tonight at 8:30: An Evening of Three Light and Musical Comedies” at the Guild Hall in East Hampton brought a starry crowd. After the matinee show on Sunday, Danner was visited by daughter Gwyneth Paltrow along with husband Chris Martin and Sarah Jessica Parker. Danner starred in the show, directed by Tony winner Tony Walton, with Simon Jones from July 17. Others who have joined the audience include Julie Andrews.