Choose St. John Event Center for your next event! The St. John Event Center ballroom serves Jacksonville as one of the largest ballrooms in Northeast Florida. Seating up to 400 people, its space provides endless versatility for your next wedding, conference or fundraiser banquet. The Courtyard serves as the focal point of the landscape of the facility. Its beauty provides an excellent option for a cocktail hour, outdoor ceremony or reception. The Divine Sanctuary and Chapel are also available to rent to all Orthodox Christians for wedding ceremonies, baptisms and other Orthodox Christian services.