The theme of this year’s Texas Cavaliers River Parade is “Fantastic Voyages,” and on Thursday, the Fiesta-tied organization led media on a journey through the glitzy barges that will make their debut at the annual event. The “Fantastic Voyages” theme is woven into each float by New Orleans-based design firm Kern Studios, famous for creating those used in Mardi Gras parades. During this Monday’s parade, the vessels will carry members of community groups and children’s charities along with celebrities and local officials down the San Antonio River. The event starts at 7 p.m.