“When I was a kid, my bond was really with my grandparents,” said Lin-Manuel Miranda, the songwriter, actor, director and producer. “I would go to Puerto Rico with my family for a month every year. As my sister and I got older, I guess you could say we got sent there for a month a year.”

Those months went on to inform Mr. Miranda’s taste in food, art and culture. “I didn’t stay in a hotel, I stayed in town, I ate Puerto Rican food. That’s different than being a tourist.”

Over the years, Mr. Miranda has become one of the most prominent advocates for Puerto Rico. Next month, he will bring his musical “Hamilton” back to San Juan’s Centro de Bellas Artes Luis A. Ferré for two weeks, hosting a fund-raiser to support the Hispanic Federation and the Flamboyan Foundation, a charity devoted to educational equity in Puerto Rico.