They learn their trade at design schools. Industrial designers are very similar to interior designers and architects in many ways. Industrial designers design products like the shape of car, a shampoo bottle or of the look of props or sets in an attraction. In the themed entertainment industry, many of them become show designers because of their varied skills. They sometimes are used to design exhibits and exhibit elements, commonly used in theme parks.
Industrial designers learn industrial design at art schools.
Film people are a very important to the success of themed attractions. Motion control simulator rides like Back to the Future at Universal Studios or Star Tours at Disney are technologies that opened up an entirely new area of expertise in themed entertainment field. Video and film production specialists are needed to produce the ride films for those attractions. Frequently, film people are also used in many other applications, from attraction pre-shows to commercial advertising in television. Set designers create many different aspects of a theme park, both interior and exterior.