SeaWorld San Antonio opens for Spring Break, continues requiring masks By Cory Dinkel article SAN ANTONIO, Texas - In a press release Friday, SeaWorld announced they would be opening daily for Spring Break while maintaining CDC recommended guidelines. Their parks are ready to host guests for safe fun thrills, and of course, amazing animals, according to Sea World. SeaWorld says out of an abundance of caution and in keeping consistent with CDC guidelines, they will continue their enhanced health and safety measures, including masks for all guests age two and older. SeaWorld SeaWorld says the park will be open daily for Spring Break operation from March 6 through March 21, with hours being from 10 a.m. until 9 p.m.