The first 50 grandparents to visit the merchandise booth at the Longacre Theatre will receive a special gift.
The comedy by Moss Hart and George S. Kaufman stars James Earl Jones and Rose Byrne.
The revival begins in August at Broadway's Longacre Theatre.
Previously announced cast members also include Annaleigh Ashford, Rose Byrne, Kristine Nielsen, and more.
The stars of Macbeth gathered after the show for a photo op.