Independent Bookshop Week runs 13–20 June 2026, directly overlapping the novel’s 18 June publication date, and the Booksellers Association explicitly frames it as a chance for author signings, photo opportunities, and the Big Book Club on 17 June.
Best tiny-budget use: offer indie shops a simple signing, stock-photo, or ‘launch week favourite’ feature; also useful for newsletter and local media outreach.