Since 1968. St. Patrick's Day has been celebrated on the River Walk as a joint project by the San Antonio River Walk Association and the Harp and Shamrock Society of Texas. This tradition continues today. Green Bud Light will be sold at the Arneson River Theatre along with Irish and other ethnic foods. Festival entertainment includes a family-friendly interactive activity called Passport to Ireland. Other festival activities include face-painting, henna artistry, caricatures, photo booth, Irish novelty items for sale and officially-licensed River Walk merchandise plus a bunch of new activities in between the musical entertainment. Durty Nelly's is sponsor of the Tater Tot eating Contest and Mad Dog's British Pub is sponsor of the dyeing of the river green.