She was in charge of presenting, together with , the 1977 OTI Song Festival, a television contest broadcast live for the Spanish-speaking countries that brought together more than 300 million viewers. She also presented the 1980 Eurovision Song Contest from The Hague, in which Spain was represented by Trigo Limpio. That same year, TVE granted her hosting duties for their end-of-year special. And in 1981, she led the Benidorm International Song Festival. But the most multitudinous television festival that Mari Cruz Soriano would present would be that of Hispanidad Day, broadcast live from Madison Square Garden in New York, and aimed at a potential audience of 500 million.