Is the Sevilla City Intro tour that is conducted by "Sevilla Walking Tours", which is recommended in Rick's Spain guidebook, worth taking if we already completed Rick's self-guided Barrio Santa Cruz walk?
I would say yes, but I dislike self-guided. Concepcion explains a lot that only a local knows.
It was well worth the time, interesting and well done. I was there in early February, only about 6 or 7 others on the tour. It might be less pleasurable if there were too many on the tour.
also - https://www.ricksteves.com/travel-tips/travel-classes/monday-night-travel/andalucia
Join Rick and his favorite Andalucían guide, Concepción Delgado, for a virtual trip to the south of Spain. Andalucía is beloved among travelers for its flamenco spirit, polka-dot dresses at the April Fair, Moorish heritage, sherry, and dancing stallions. With Rick and Concepción, we visit Sevilla, Córdoba, Granada, the Ruta de los Pueblos Blancos (route of the white-washed villages), and the best of the Costa del Sol — with an unforgettable plate of paella on the beach. And to make sure the party is complete, Rick and Concepción are virtually sharing delightful plates of tapas and imagining the heat of an Andalucían summer with a refreshing jug of sangria.