SeaWorld San Antonio is letting the good times roll as Mardi Gras returns to the park starting this Saturday, January 13 and running through February 25. SeaWorld’s Mardi Gras celebration transforms Texas’ biggest and best theme park into a jazzed-up, New Orleans-style atmosphere complete with live music, festive characters, and a Mardi Gras-inspired menu featuring both all-new and returning Cajun and Creole food favorites.