PROVIDENCE — As the bagpipers and Irish step dancers passed by on Smith Street, Kate McStay and her family had a front row seat.“We’re Irish,” said McStay’s mother, Debbie Ferns, of Cranston. “We’ve been to Ireland.”“It’s very different from America,” said McStay, of Warren. “Everybody likes to have a good time there. They’re so much more friendly.”Ferns’ grandmother [...]