Grand Ballroom-Mahaffey THTR is located at 400 1St St S, St Petersburg, FL. This location is in the Downtown St. Petersburg neighborhood. This business specializes in Government. Grand Ballroom-Mahaffey THTR is open Mon, 9am-5pm; Tue, 9am-5pm; Wed, 9am-5pm; Thu, 9am-5pm; Fri, 9am-5pm; Sat, Closed; Sun, Closed and accepts Mastercard and Visa.