As of March 2026, the Broadway musical Hairspray is the headlining production on Royal Caribbean's Symphony of the Seas. This Oasis-class ship features a full-scale, professional version of the Tony Award-winning show in its Royal Theater, complete with a live orchestra and high-end stage design. The production is a "must-see" for cruisers, and because it is highly popular, guests are strongly encouraged to make reservations via the Royal Caribbean app as soon as they board—or even up to 30 days prior for certain loyalty tiers. The show is included in the cruise fare, meaning there is no additional cost to attend. While other ships in the fleet host different Broadway favorites—such as Grease on Harmony of the Seas or Mamma Mia! on Allure of the Seas—Hairspray remains the signature 2026 entertainment experience for passengers on Symphony. For the best experience, travelers recommend arriving at the theater at least 30 minutes before showtime to secure prime seating, as the venue frequently reaches capacity for the "Big Hair, Big Voice" spectacular.