In the year since the release of their sophomore album, “Some Nights,” the members of the New York pop-rock trio Fun. have had to make many decisions. With six Grammy nominations for an album that spawned the ultra-catchy hit singles “We Are Young,” “Some Nights,” and “Carry On,” singer Nate Ruess, guitarist Jack Antonoff, and multi-instrumentalist Andrew Dost have conferred on everything from the routing of their sold-out tour to the wardrobe for a recent inaugural ball.

One decision, however, was easy: taking a gig in Cancun at the end of January between Midwest tour dates. “It was the most obvious idea ever,” says Antonoff by phone from sunny Mexico with a chuckle. The trio return stateside shortly to resume their sold-out tour, including a stop at the Orpheum Theatre Friday and a performance at the Grammy Awards on Feb. 10.