The fun kicks into full gear following the Downtown Mermaid Promenade! The San Marcos River serves as the beautiful backdrop to this fun filled FREE festival that has something for Mer-folk of all ages. The Mermaid Aqua Faire kicks off right after the parade and continues the celebration at San Marcos Plaza Park! An all-day event to include live music , a juried art market coordinated by the San Marcos Art League, food booths and the KIDzone . Festival-goers will learn about environmental stewardship at the Eco Village, and take part in the variety of interactive activities planned for the whole family; to include hands-on workshops, scheduled presentations by environmental experts and art inspired learning projects for everyone. Sightings of mermaids in our river is a guarantee!